Transition metal complexes with trivalent phosphorus compounds useful as stabilizers for polymers

ABSTRACT

ULTRAVIOLET LIGHT ABSORBERS AND STABILIZERS, PARTICULARLY FOR MONOOLEFIN POLYMERS, ARE PROVIDED FROM METAL COMPLEXES OF TRIVALENT PHOSPHORUS COMPOUNDS OF THE FORMULAE   ME(L)N(A)M(L&#39;&#39;)O   WHERE ME IS PREFERABLY NICKEL BUT CAN BE MANGANESE, IRON, COPPER, MOLYBDENUM OR TUNGSTEN, L IS (P(X)(Y)(Z) WHERE ANY ONE OR ALL OF X, Y AND Z CAN BE O HYDROCARBYL,   -N(-R31)-R32   WHERE R31 AND R32 ARE HYDROCARBYL OR HYDROGEN, S HYDROCARBYL, HYDROCARBYL, 2 OR 3 OF X, Y AND Z CAN FORM ONE OR MORE HETEROCYCLIC RINGS WITH P, A IS AN ANION SUCH AS HALOGEN, E.G. CL, BR, I OR F, NO3, CLO4, R33COOWHERE R33 IS HYDROCARBYL, ANY HYDROCARBYL GROUP CAN HAVE 1 OR 2 HALOGEN SUBSTITUENTS, M IS 0 OR A SMALL WHOLE NUMBER, E.G. 1, 2, 3, 4, L&#39;&#39; IS CO, NO, CN, HALOGEN, O IS ZERO OR A SMALL WHOLE NUMBER, E.G. 1, 2, 3, 4, N IS 1 OR ANOTHER SMALL WHOLE NUMBER,E.G.2,3,4,O+M+N IS NOT GREATER THAN THE HIGHEST COORDINATION NUMBER OF THE METAL.

3,661,843 Patented May 9, 1972 United States Patent Ofice 3,661,843 TRANSITION METAL COMPLEXES WITH TRI- VALENT PHOSPHORUS COMPOUNDS USE- FUL AS STABILIZERS FOR POLYMERS Ingenuin Hechenbleikner, Park Ridge, N.J., and Thomas G. Kugele, Cincinnati, and John F. Hussar, Loveland, Ohio, assignors to Cincinnati-Milacron Chemicals, Inc., Reading, Ohio No Drawing. Filed Oct. 27, 1970, Ser. No. 84,494 Int. Cl. C08f 45/62 U.S. Cl. 260-45.75 N 7 Claims ABSTRACT OF THE DISCLOSURE Ultraviolet light absorbers and stabilizers, particularly for monoolefin polymers, are provided from metal complexes of trivalent phosphorus compounds of the formulae )n( )m( )o where Me is preferably nickel but can be manganese, iron, copper, molybdenum or tungsten, L is (P(X) (Y) (Z) where any one or all of X, Y and Z can be hydrocarbyl,

where R and R are hydrocarbyl or hydrogen, S hydrocarbyl, hydrocarbyl, 2 or 3 of X, Y and Z can form one or more heterocyclic rings with P, A is an anion such as halogen, e.g. Cl, Br, I or F, N0 C R COO- where R is hydrocarbyl, any hydrocarbyl group can have 1 or 2 halogen substituents, m is 0 or a small whole number, e.g. 1, 2, 3, 4, L' is CO, NO, ON, halogen, 0 is zero or a small whole number, e.g. 1, 2, 3, 4, n is 1 or another small whole number, e.g. 2, 3, 4, o+mi+n is not greater than the highest coordination number of the metal.

The present invention relates to stabilizers and ultraviolet absorbers for plastics. The compounds all are metal complexes of trivalent phosphorus compounds of the formulae )n( )m( )o where Me is preferably nickel but can be manganese, iron, copper, molybdenum or tungsten, -L is P(X) (Y) (Z) where any one or all of X, Y and Z can be 0 hydrocarbyl,

where R and R are hydrocarbyl or hydrogen, S bydrocarbyl, hydrocarbyl, 2 or 3 of X, Y and Z can form one or more heterocyclic rings with P, A is an anion such as halogen, e.g. Cl, Br, I or F, N0 C10 R COO where R is hydrocarbyl, any hydrocarbyl group can have 1 or 2 halogen substituents, m is 0 or a small whole number, e.g. 1, 2, 3, 4, L is CO, NO, CN, halogen, o is zero or a small whole number e.g. 1, 2, 3, 4, n is 1 or another small whole number, e.g. 2, 3, 4, o+m+n is not greater than the highest coordination number of the metal.

While all of the compounds employed in the present invention come within the above generic formula, the compounds are not equally useful and not all compounds within the generic formula can be employed. The disclosure and claims hereinafter will point out which compounds can be used. Some of the compounds not only are novel as stabilizers and ultraviolet absorbers, but also are novel per se.

The preferred compounds are the nickel complexes and they are particularly useful with monoolefin polymers such as polypropylene, polyethylene, and copolymers of ethylene or propylene with each other or with other ethylenically unsaturated hydrocarbons.

BACKGROUND It has been proposed in Kauder Pat. 3,395,112, July 30, 1968 discloses certain nickel or-ganophosphites as stabilizers for olefin polymers. In addition, ultraviolet light absorbers and thiodipropionates or organotriphosphites can be employed. Such materials are not nickel complexes with trivalent phosphorus compounds. Kauder, in col. 3, lines 11-20, shows that nickel forms two types of compounds in one of which the nickel is attached to organic radicals by coordinate bonds in which nickel has an apparent valence of four and in the other of which the bonds are ionic and the nickel is bivalent. Kauder mentions that only the latter type compounds have been found to be stabilizers for polyolefins. No mention is made of coordination complexes where nickel has a valence of 0 or a positive valence, e.g. of two.

Salts of nickel (and other metals) with organic phosphites having a free hydroxyl group of course, are well known as antioxidants for polyolefins, e.g. note Kiyawa 3,412,118, Nov. 19, 1968, Marinaccio 3,481,897, Dec. 2, 1969. These compounds are not coordination complexes.

The use of a special type of trivalent organo phosphorus copper complex as flame retardants for polymers including polyethylene is proposed in Grayson Pat. 3,294,870, Dec. 27, 1966 and Grayson Pat. 3,345,392, Oct. 3, 1967. The Grayson complexes are complexes of cuprous salts with ethylene bis(aryl or cyanoethyl phosphines). There is no indication of improved ultraviolet light stability.

Known complexes of nickel, manganese, molybdenum, iron, copper and tungsten with trivalent phosphorus compounds useful in the invention There are many patents and literature articles showing the preparation or mentioning various uses of trivalent organic phosphorus compounds useful in the present invention. They are set forth below. The entire disclosure, of these patents and literature references is herebyincorporated by reference rather than being repeated vet; batim to reduce the size of the present application. The metal complexes of organic trivalent phosphorus compounds useful in the present invention can be .manufac-; tured by the methods disclosed in such prior art or by the specific procedures set forth as methods A and D hereinafter.

Kleinschindt Pat. 2,542,417, Feb. 20, 1951, discloses bis (triphenyl phosphine) nickel dicarbonyl complex. Reed Pat. 2,686,208, Aug. 10, 1954, discloses various aryl and alkyl phosphine nickel carbonyl complexes and a method of making them including his (triphenyl phosphine) nickel, dicarbonyl, mono (triaryl phosphine) nickel tricarbonyl and bis(trialkyl phosphine) nickel dicarbonyl. Reppe Pat.- 2,738,364, Mar. 13, 1956, discloses tertiary phosphine nickel salts such as the chlorides, bromides, iodides, cyanide and rhodanides, including bis(triphenyl phosphine) nickel dibromide. Hodes Pat. 3,054,775, Sept. 18, 1962, discloses various alkyl and aryl phosphine nickel complexes including bis(tributyl phosphine) nickel dichloride, bis(tributyl phosphine) nickel dicarbonyl, bis(bi-' phenyl phosphine) nickel dicarbonyl. Schroll Pat. 3,054,- 815, Sept. 18, 1962, discloses the preparation of cyclw pentadienyl nickel trihydrocarbyl phosphine complexes including cyclopentadienyl nickel triphenyl phosphine chlo-..

enyl nickel triisobutyl phosphine chloride, cyclopentadienyl nickel triethyl phosphine iodide, cyclopentadienyl nickel triphenyl phosphine bromide, cyclopentadienyl nickel tri(m-tolyl) phosphine iodide, cyclopentadienyl nickel tri(p-tolyl) phosphine bromide, methylcyclopentadienyl nickel biphenyl phosphine chloride, ethylcyclopentadienyl nickel triethyl phosphine bromide, methyl t-butyl-cyclopentadienyl nickel trioctyl phosphine chloride and indenyl nickel triphenyl phosphine chloride.

Luttinger Pat. 3,098,943, July 23, 1963 and Luttinger Pat. 3,131,155, Apr. 28, 1964, both show the preparation of aliphatic and aromatic phosphine nickel complexes including bis(tris cyanoethyl phosphine) nickel dibromide, bis(tris cyanoethyl phosphine) nickel dichloride, bis(triphenyl phosphine) nickel dichloride, bis( tributyl phosphine nickel dichloride ethane bis(di[cyanoethyl] phosphine) nickel dichloride, bis(triphenyl phosphine) nickel dirhodanide, bis(tris cyanoethyl phosphine) nickel sulfate and bis(tris cyanoethyl phosphine) tri nickel diphosphate.

Mariwether Pat. 3,117,952, Jan. 14, 1964, discloses nickel carbonyl mono and bis phosphine complexes having alkyl, aryl, alkoxy, aryloxy and cyanoalkyl groups attached to the phosphorus including dicarbonyl bis [tris (2-cyanoethyl phosphine)] nickel, dicarbonyl tetrakis (2- cyanoethyl) diphosphine nickel, dicarbonyl bis(triphenyl phosphine) nickel, dicarbonyl tetrakis-(Z-cyanoethyl)ethylene diphosphine nickel, dicarbonyl tetraethyl ethylene diphosphine nickel dicarbonyl bis(phenyl diethyl phosphine) nickel and tricarbonyl phenyl diethyl phosphine nickel.

Clark Pat. 3,152,158, Oct. 6, 1964, discloses the preparation of tetrakis (tri organophosphite) nickel complexes of the formula Ni[P(OR )(OR )(OR where R and R and R are alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, aryl substituted aryl and aralkyl including tetrakis (triphenyl phosphite) nickel, tetrakis [tri(2- ethylhexyl) phosphite] nickel, tetrakis [tri(p-methoxyphenyl) phosphite] nickel, tetrakis [tri(p-tolyl)phosphite] nickel, tetrakis [tri(2-chloroethyl) phosphite] nickel, triphenyl phosphite nickel tricarbonyl, bis(triphenyl phosphite) nickel dicarbonyl, tri(triphenyl phosphite) nickel monocarbonyl, tetrakis (tris octadecyl phosphite) nickel, tetrakis (trimethyl phosphite) nickel, tetrakis (tricyclohexyl phosphite) nickel and tetrakis (tricyclopentyl phosphite) nickel.

Clark Pat. 3,244,738, Apr. 5, 1966, shows the preparation of various phosphine nickel carbonyl complexes including tris(triphenyl phosphine) nickel monocarbonyl, tris(triphenyl phosphite) nickel monocarbonyl, bis(triphenyl phosphite) nickel dicarbonyl, tris(tri p-tolylphosphite) nickel monocarbonyl, tris (tri-2-chloroethyl phosphite) nickel monocarbonyl, tris(tricyclohexyl phosphine) nickel monocarbonyl, bis(triphenyl phosphite) tritolyl phosphite nickel monocarbonyl, bis(triphenyl phosphite) triethyl phosphite nickel monocarbonyl, tris (mixed 2-ethylhexyl octyl phenyl phosphite) nickel monocarbonyl, bis (triphenyl phosphite) triphenyl phosphine nickel monocarbonyl and bis (triphenyl phosphine) triphenyl phosphite nickel monocarbonyl. Cities Service British Pat. 979,553, Ian. 6, 1965, has a similar disclosure.

Storrs Pat. 3,249,641, May 3, 1966, shows various trivalent phosphorus nickel carbonyl complexes including triphenyl phosphite nickel tricarbonyl, bis(triphenyl thiophosphite) nickel dicarbonyl, bis(tritolyl phosphite) nickel dicarbonyl, tris(triisoocty1 phosphite) nickel carbonyl, bis (triphenyl phosphine) nickel dicarbonyl, bis (phenyl diethyl phosphine) nickel dicarbonyl and bis(ethyl dipropyl phosphine) nickel dicarbonyl.

Cannell Pat. 3,271,438, Sept. 6, 1966, discloses tetrakis (trihydrocarbyl phosphite) nickel compounds including tetrakis (tributyl phosphite) nickel (O), tetrakis (triphenyl phosphite) nickel (O), tetrakis [tri(p-tolyl) phosphite] nickel (O), tetrakis (trimethyl phosphite) nickel (O), tetrakis (triisopropyl phosphite) nickel (O), bis(tritolyl phosphite) bis (trihexyl phosphite) nickel (O), tet- 4 rakis (amyldibutyl phosphite) nickel (O), tetrakis (dibenzylphenyl phosphite) nickel (O) and tetrakis [tri(2- ethylhexyl) phosphite] nickel (0).

Clark patent 3,328,443, June 27, 1967, discloses the preparation of tetrakis(organo phosphorus) nickel complexes including tetrakis (triphenyl phosphite) nickel, tetrakis(tri-p-methoxphenyl phosphite) nickel, tetrakis (tri-p-tolyl phosphite) nickel, tetrakis [tri(2-ethylhexy1) phosphite] nickel, bis(triphenyl phosphite) bis(triethyl phosphite) nickel, tris (triphenyl phosphite) triphenyl phosphine nickel as well as other compounds having the formula where Z Z Z and Z, are P(O,,R )(O R )(O R where a is 0 or 1 and R R and R are alkyl, cycloalkyl, aryl, alkaryl, alkyl substituted cycloalkyl, aralkyl, alkoxyphenyl, alkoxyalkyl, hydroxyphenyl, alkoxy, haloaryl, haloalkyl and halocycloalkyl.

Kutepaw Pat. 3,346,608, Oct. 10, 1967, discloses the preparation of complexes such as tris(triphenylphosphite) nickel, tris(tri-m-tolylphosphite) nickel, bis(tri-thymyl phosphite) nickel, bis(tri-o-diphenyl phosphite) nickel, bis(tri-2,4-di-t-butylphenyl phosphite) nickel, bis(tri-4-tbutylphenyl phosphite) nickel, tris(tri-o-chloropheny1 phosphite) nickel and bis(tri-4-isooctyl phenyl phosphite) nickel.

Maxfield Pat. 3,427,365, Feb. 11, 1969, discloses nitrosyl nickel complexes including triphenyl phosphine (nitrosyl) iodonickel, triphenyl phosphine (nitrosyl) bromonickel, tributyl phosphine (nitrosyl) chloronickel and tricyclopentyl phosphine (nitrosyl) chloronickel.

Vinal, Inorganic Chemistry, Vol. 3, (7) July 1964, pages 10624063 discloses the preparation of tetrakis (trialkyl phosphite) nickel (0) complexes such as tetrakis (triethyl phosphite) nickel (O).

Gmelins Handbuch der Anorganischen Chemie, 8th edition, System No. 57 (C), pages 10-35 shows the preparation of numerous complexes of trivalent phosphorus compounds with nickel, e.g. tetrakis (triaminophosphine) nickel, tetrakis (triethyl phosphine) nickel, bis(triethyl phosphine) nitrosyl nickel nitrite, bis(triethyl phosphine) nitrosyl nickel nitrate, bis(triethyl phosphine) nitrosyl nickel chloride, bis(triethyl phosphine) nitrosyl nickel bromide, bis(triethyl phosphine) nitrosyl nickel iodide, bis(tricyclohexyl phosphine) nitrosyl nickel bromide, bis- (tricyclohexyl phosphine) nitrosyl nickel thiocyanate, cisbis(tricyclohexyl phosphine nitrosyl nickel bromide), trans-bis(tricyclohexyl phosphine nitrosyl nickel bromide), tetrakis (triphenyl phosphine) nickel, tris(triphenyl phosphine) nickel, bis(triphenyl phosphine) nitrosyl nickel nitrite, bis(triphenyl phosphine) nitrosyl nickel nitrate, bis(triphenyl phosphine) nitrosyl nickel chloride, bis(triphenyl phosphine) nitrosyl nickel bromide, bis(triphenyl phosphine) nitrosyl nickel iodide, trans bis(triphenyl phosphine nitrosyl nickel iodide), bis(triphenyl phosphine nitrosyl nickel thiocyanate), bis(ethyl diphenyl) nickel dicarbonyl, bis(ethyl diphenyl) nitrosyl nickel bromide, bis(ethane bis[dimethylphosphine]) nickel, bis(methanc bis[diphenyl phosphine]) nickel, bis(ethane bis[diphenyl phosphine]) nickel, ethane bis(disphenyl phosphine) nitrosyl nickel iodide, ethane bis(diphenyl phosphine) nitrosyl nickel thiocyanate, bis(tricyclohexyl phosphine) nickel nitrosyl bromide ethane bis(diphenyl phosphine), bis(propane bis[diphenyl phosphine]) nickel, bis(ophenylene bis[diethyl phosphine]) nickel, bis(o-phenylene bis[diphenyl phosphine]) nickel, ethane bis(diphenyl phosphine) nickel dicarbonyl, o-phenylene bis(diethyl phosphine) nickel dicarbonyl, o-phenylene bis(diphenyl phosphine) nickel dicarbonyl, l,l,l-tris(diphenylphosphinomethyl) ethane nickel monocarbonyl, bis[1,1,l-tris- (diphenylphosphinomethyl) ethane] nickel, trimethyl phosphite nickel tricarbonyl, bis(trimethyl phosphite) nickel dicarbonyl, tris (trimethyl phosphite) nickel monocarbonyl, tetrakis(trirnethyl phosphite) nickel, triethyl phosphite nickel tricarbonyl, bis(triethyl phosphite) nickel dicarbonyl, tris(triethyl phosphite) nickel monocarbonyl, tetrakis(triethyl phosphite) nickel, tetrakis [tris- (2-chloroethyl) phosphite] nickel, tetrakis(tripropyl phosphite) nickel, tetrakis (triisopropyl phosphite) nickel, tetrakis- (tributyl phosphite) nickel, tetrakis (tris[2-ethylhexyl] phosphite) nickel, tetrakis (tris[2-ethoxyhexyl] phosphite) nickel, tetrakis (tris[decyl] phosphite) nickel, tetrakis (tricyclohexyl phosphite) nickel, tetrakis (triphenyl phosphite) nickel, tris(triphenyl phosphite) nickel monocarbonyl, bis(triphenyl phosphite) nickel dicarbonyl, triphenyl phosphite nickel tricarbonyl, bis(triphenyl phosphite) di nitrosyl nickel, bis(triphenyl phosphite) nitrosyl bromide, bis(triphenyl phosphite) nitroxyl nickel iodide, trans bis[=bis(triphenyl phosphite) nitrosyl nickel bromide], trans bis[bis(triphenyl phosphite)nitrosyl nickel iodide], bis(triphenyl phosphite) nitrosyl nickel thiocyanate, tris(triphenyl phosphite)triphenyl phosphine nickel, bis(triphenyl phosphite) bis(triethyl phosphite) nickel, tetrakis (diphenyl decyl phosphite) nickel, tetrakis (ptolyl phosphite) nickel, tetrakis (trimethylol ethane phosphite) nickel (also called tetrakis (4-methyl -2,6,7-trioxa- 1-phospha-bicyclo[2,2,2]octane) nickel, tris (trimethylol ethane phosphite) nickel carbonyl, bis (trimethylol ethane phosphite) nickel dicarbonyl, trimethylol ethane phosphite nickel tricarbonyl, tetrakis (trimethylol propane phosphite) nickel, bis(triphenyl phosphine) nickel chloride, bis(triphenyl phosphine) nickel bromide, bis(triphenyl phosphine)nickel iodide, tris (triphenyl phosphine) nickel chloride, tris (triphenyl phosphine) nickel bromide and tris (triphenyl phosphine) nickel iodide.

Adelson Pat. 2,645,613, July 14, 1953, discloses cupric chloride tributyl phosphine complex, Cannell Pat. 3,102,- 899, Sept. 3, 1963, discloses the preparation of nickel, iron and molybdenum complexes such as tetrakis (triethyl phosphite) nickel (O), tetrakis (tricresyl phosphite) nickel (O), tetrakis (QC-dimethyl phenyl thiophosphite) nickel (O), hexakis (tripentyl phosphine) molybdenum (O), tetrakis (tris[diethylamino] phosphite) nickel (O) and tris(dimethylamino dimethyl thiophosphite) iron Mullineaux Pat. 3,110,747, Nov. 12, 19.63, discloses nickel, molybdenum, tungsten, iron and manganese complexes including tetrakis (op-dimethyl p chlorophenyl thiophosphite) nickel, hexakis (dimethylamino dimethyl thiophosphite) molybdenum and hexakis (tris[2,6 dibromo-4-methylphenyl] phosphite) tungsten.

Welch Pat. 3,355,439, Nov. 28, 1967, prepares nickel, molybdenum, copper and iron salt complexes of vinyl phosphines of the formula R PCH=CH Where each R is hydrocarbyl, e.g. vinyl diphenyl phosphine copper chlorides .(1:1) and vinyldiphenyl phosphine nickel chloride (1:1).

Patrafke Pat. 3,438,805, Apr. 15, 1966, discloses nickel, copper, iron and molybdenum salt complexes such as his (triphenyl phosphine) cupric chloride, bis(tributyl phosphine) cupric chloride, bis(tributyl phosphine) cupric acetate, bis(tris[dimethylamino] phosphine) molybdenum trichloride and bis(trisljdimethylamino] phosphine) iron dichloride.

.Van Peski Pat. 2,199,944, May 7, 1940, discloses complexes of copper, nickel andiron salts with phosphines and phosphites. Raichele Pat. 3,360,589, Dec. 26, 1967, stabilizes gellable polyesters with cuprous chloride and bromide complexes of tertiaryalkyl, cycloalkyl, aryl and aralkyl phosphites, e.g. triethyl phosphite. cuprous chloride, triethyl phosphite-cuprous bromide, tris(Z-chloroethyl) phosphite cuprous chloride, tris(2-chloroethyl) phosphite cuprous bromide, tripropyl phosphite cuprous chloride, tripropyl phosphite cuprous bromide, tributyl phosphite cuprous chloride, tributyl phosphite cuprous bromide, tribenzyl phosphite cuprous chloride, tribenzyl phosphite cuprous bromide, tricyclohexyl phosphite cuprous chloride, tricyclohexyl phosphite cuprous bromide, triphenyl phosphite cuprous chloride and triphenyl phosphite cuprous bromide.

Dikotter Pat. 3,428,597, stabilizes polyamides with cuprous iodide complexes of alkyl and aryl phosphines and phosphites such as triphenyl phosphite cuprous iodide, tris decyl phosphite cuprous iodide, triphenyl phosphine cuprous iodide, diphenyl decyl phosphite cuprous iodide, trihexyl phosphine cuprous iodide, trihexyl phosphite cuprous iodide, hexyl didecyl phosphite cuprous iodide and hexyl didecyl phosphine cuprous iodide.

Lambert Pat. 3,013,039 discloses the preparation of alkyl, cycloalkyl, aralkyl, aryl and alkaryl phosphine manganese tricarbonyl nitrosyl complexes and similar triorgano phosphine nitrosyl complexes, e.g. triphenyl phosphine manganese trinitrosyl, triphenyl phosphine manganese tricarbonyl nitrosyl, triethyl phosphine manganese trinitrosyl, triethyl phosphine manganese tricarbonyl mononitrosyl, tricyclohexyl phosphine manganese trinitrosyl, tricyclohexyl phosphine manganese tricarbonyl mononitrosyl, trimethylphosphine manganese tricarbon yl nitrosyl, trimethyl phosphine manganese trinitrosyl, tri-' propyl phosphine manganese tricarbonyl nitrosyl, tripropyl phosphine manganese trinitrosyl, tributyl phosphine manganese tricarbonyl nitrosyl, tributyl phosphine manganese trinitrosyl, tricumenyl phosphine manganese trinitrosyl, tricycloheptyl phosphine manganese tricarbonyl nitrosyl, tricycloheptyl phosphine manganese trinitrosyl, triisopropyl phosphine manganese tricarbonyl nitrosyl, tribenzyl phosphine manganese tricarbonyl nitrosyl, tribenzyl phosphine manganese trinitrosyl, tribiphenyl phosphine manganese tricarbonyl nitrosyl and tribiphenyl phosphine manganese trinitrosyl,

Johnston Pat. 3,037,038, May 29, 1962, shows the preparation of manganese carbonyl polytertiary phosphites such as manganese tricarbonyl bis(triphenyl phosphite), manganese dicarbonyl tris(tributyl phosphite), manganese tricarbonyl bis(tributyl phosphite), manganese carbonyl tetrakis (trimethyl phosphite), manganese tricarbonyl bis (triethyl thiophosphite), manganese tricarbonyl bis(tritolyl phosphite), manganese tricarbonyl bis(trimethyl phosphite), manganese tricarbonyl bis(triethyl phosphite), manganese dicarbonyl tris (triethylthiophosphite), manganese carbonyl tetrakis (triethylthiophosphite), manganese carbonyl tetrakis (trinaphthyl phosphite), manganese carbonyl tetrakis (phenyl dimethyl phosphite), manganese carbonyl tetrakis (tribenzyl phosphite)v and manganese carbonyl bis(trimethylthiophosphite) bis(triphenylthiophosphite) Coffield Pat. 3,100,212, Aug. 6, 1963, discloses complexes such as triphenyl phosphine manganese tetracarbonyl, tricyclohexyl phosphine manganese tetracarbonyl, triethyl phosphine manganese tetracarbonyl and triphenyl phosphite manganese tetracarbonyl.

Schroll Pat. 3,130,215, Apr. 21, 1964, discloses the preparation of organomanganese carbonyl triorganophosphines and phosphites such as methylcyclopentadienyl manganese carbonyl bis(trimethyl phosphite) cyclopentadienyl manganese dicarbonyl tributyl phosphine, methyl cyclopentadienyl manganese dicarbonyl trimethyl phosphite, cyclopentadienyl manganese carbonyl bis(triphenyl phosphite), cyclopentadienyl manganese dicarbonyl tri phenyl phosphite, cyclopentadienyl manganese dicarbonyl triphenylphosphine, methyl cyclopentadienyl manganese carbonyl ,bis(triphenyl phosphite), methyl cyclopentadienyl manganese dicarbonyl triphenyl phosphites, methyl cyclopentadienyl manganese carbonyl bis(triphenyl PhOS': phine,) methyl cyclopentadienyl manganese dicarbonyl triphenyl phosphines, ethyl propyl cyclopentadienyl manganese dicarbonyl trianisyl phosphite, dimethyl cyclopentadienyl manganese carbonyl bis(tris[ethylphenyl] phosphite), methyl cyclopentadienyl manganese dicarbonyl tris(propylphenyl) phosphine, octyl cyclopentadienyl manganese carbonyl bis(tri-n-hexyl phosphite), cyclopentadienyl manganese carbonyl bis(trimethyl phosphine), methyl cyclopentadienyl manganese carbonyl, bis (trimesityl phosphine), dimethyl cyclopentadienyl manganese dicarbonyl tridodecyl phosphite and cyclopentadienyl manganese dicarbonyl tri-n-propyl phosphine.

Matthews Pat. 3,117,983, Jan. 14, 1964, discloses the preparation of molybdenum and tungsten carbonyl phosphines and phosphites such as bis(triphenyl phosphine) molybdenum tetracarbonyl, tris(triphenyl phosphite) molybdenum tricarbonyl, bis(triphenyl phosphite) molybdenum tetracar-bonyl, triphenyl phosphine tungsten pentacarbonyl and triphenyl phosphine molybdenum pentacarbonyl.

McHugh Pat. 3,173,873, Mar. 16, 1965, discloses iron carbonyl phosphine complexes such as his (triphenyl phosphinyl) iron tricarbonyl, bis(tri alpha naphthyl phosphinyl) iron tricarbonyl, bis(tri beta naphthyl phosphinyl) iron tricarbonyl, bis(tri-4-tolylphosphinyl) iron tricarbonyl, triphenyl phosphinyl iron tetracarbonyl, trimesityl phosphinyl iron tetracarbonyl, tris(2-phenylethyl) phosphinyl iron tetracarbonyl, tris(4-biphenylyl) phosphinyl iron tetracarbonyl, tris(tetrahydronaphthyl) phosphinyl iron tetracarbonyl, and diphenyl benzyl phosphinyl iron tetracarbonyl.

Unless otherwise indicated, all parts and percentages are by weight.

METHODS A b, AND D Methods A b, c and D were carried out as in the illustrative examples below.

Method A.--Tris(tricyclohexylphosphite) nickel carbonyl (Compound 19) Reagents:

Ni(CO) -34.34 g., 0.2 mol (C6H110)3P262 g., 0.8 mol Xylene (solvent)-250 ml.

The tricyclohexyl phosphite and xylene were added to a glass apparatus fitted for heating, stirring, and refluxing. Nickel tetracarbonyl was slowly added at room temperature. After the addition was completed, the stirred reaction mixture was heated to reflux and held there until evolution of carbon monoxide ceased. The reaction flask was then cooled and the colorless crystals which separated Were isolated by filtration. After drying, the colorless crystals melted at 160-170 C. The yield was 95% based on the nickel carbonyl used.

Analysis of the product indicated 5.5% nickel.

Method A.-Tetrakis [tris 2-chloroethyl) phosphite] nickel (Compound Reagents:

Ni(CO) -19.0 g., 0.112 mole T ris(2-chloroethyl) phosphite134 g., 0.5 mole Xylene (solvent)225 ml.

The phosphite and one-half the Xylene were placed in a glass reaction vessel. To this was added the nickel carbonyl dissolved in the remainder of xylene. When addition was completed, the stirred reaction mixture was slowly heated to reflux and held there until evolution of carbon monoxide ceased. The reaction mixture was cooled slightly, then vacuum stripped at 150 C./0.l mm. The residue, a dark solid, was first recrystallized from methanol-acetone, finally heptane-benzene. Yield: 37 gms.

Method A.--Tetrakis(2,2-dimethyl-1,3-propylene cyclohexyl phosphite) nickel (Compound 13) Reagents:

Ni(CO) -9.2 g., 0.054 mole 2,2-dimethyl-1,3-propylene cyclohexyl phosphite g., 0.22 mole Chlorobenzene (solvent) 200 ml.

The nickel carbonyl and chlorobenzene were added to a 3-necked flask equipped with stirrer, dropping funnel and condenser. 2,2-dimethyl-1,3-propylene cyclohexyl phosphite was slowly added at room temperature. After the addition was completed, the stirred mixture was slowly heated to reflux and this temperature maintained until no more CO evolved. The solvent was removed under 0.5 mm. vacuum to a final temperature of 140 C. Upon cooling the flask contents solidified and the colorless crystalline compound was isolated by recrystallization from acetone. The yield was 52 g. or of the theoretical.

Method D.-Bis(o-phenylenephenyl phosphite) cuprous iodide complex (Compound 14) 0.1 mol of cuprous iodide was suspended in 50 cc. of acetonitrile and 0.2 mol of o-phenylenephenyl phosphite was added. The mixture was heated under reflux for 10 minutes and the crystals which separated were collected by filtration.

ILLUSTRATIVE TYPES OF COMPOUNDS USEFUL IN THE INVENTION Type 1 where R is alkyl of 1 to 17 carbon atoms, preferably 1 to 4 carbon atoms, e.g. nickel O tetrakis (trimethylolpropane phosphite) (hereinafter identified as Compound 1), nickel tetrakis (trimethylolethane phosphite), nickel tetrakis (trimethylolbutane phosphite), nickel tetrakis (trimethylol isobutane phosphite), nickel tetrakis (trimethylol pentane phosphite), nickel tetrakis (trimethylol hexane phosphite), nickel tetrakis (trimethylol heptadecane .phosphite), nickel tetrakis (trimethylol undecane phosphite).

Type 2 where R R and R are hydrocarbyl, e.g. aryl, alkyl, cycloalkyl or aralkyl, e.g. bis(triphenylphosphine) nickel O dicarbonyl (hereinafter called Compound 2), bis(trimethylphosphine) nickel dicarbonyl, bis(triethylphosphine) nickel dicarbonyl, bis(tributyl phosphine) nickel dicarbonyl, bis(tricyclohexyl phosphine) nickel dicarbonyl, bis(tri-[Z-ethylhexyl] phosphine) nickel dicarbonyl, bis(tri[octadecyl] phosphine) nickel dicarbonyl, bis(tri [p-tolyl] phosphine) nickel dicarbonyl, bis(tribenzyl phosphine) nickel dicarbonyl, bis(tri dodecyl phosphine) nickel dicarbonyl. These compounds have not proven to be among the most effective stabilizers. In general, in this type and in the other types of stabilizers, the presence of an aromatic group does not impart as good stabilizing properties as the presence of an aliphatic, e.g. alkyl, or hetcrocyclic phosphorus containing group.

Type 3 R. R. R where R R R and R are alkyl, aryl, alkaryl or cycloalkyl and R is alkylene, preferably of 2 to 3 carbon atoms, e.g. ethylene bis(diphenyl phosphine) nickel 0 dicarbonyl (hereinafter called Compound 3), trimethylene bis(diphenyl phosphine) nickel dicarbonyl, ethylene bis (dimethylphosphine) nickel dicarbonyl, ethylene bis(diethyl phosphine) nickel dicarbonyl, ethylene bis (diisooctyl phosphine) nickel dicarbonyl, ethylene bis(propyl hexyl phosphine) nickel dicarbonyl, ethylene bis(di-otolylphosphine) nickel dicarbonyl, ethylene'bis(dicyclohexyl phosphine) nickel dicarbonyl, ethylene bis(dibenzyl phosphine) nickel dicarbonyl, ethylene bis(dioctadecyl phosphine) nickel dicarbonyl, trimethylene bis(dibutyl phosphine) nickel dicarbonyl. The compounds wherein R Type 4 where R is a 1 to 17 carbon atom alkyl or is hydroxymethyl, e.g. tris(trimethylol propane phosphite) molybdenum O tricarbonyl (hereinafter called Compound 4), tris (trimethylolethane phosphite) molybdenum tricarbony], tris(trimethylolpentane phosphite)molybdenum tricarbonyl, tris(trimethylol heptadecane phosphite) molybdenum (tricarbonyl), tris(pentaerythritol phosphite) molybdenum tricarbonyl. Quite good ultraviolet stabilizing results have been obtained with these compounds. However, they impart some color to the resins which may be objectionable for some uses where the resin must be colorless. These compounds are believed to be novel per se.

Type 5 where R R and R are hydrocarbyl as defined above, e.g. bis (triphenyl phosphine) iron 0 tricarbonyl (hereinafter called Compound 5, bis(trimethyl phosphine) iron tricarbonyl, bis(triethyl phosphine) iron tricarbonyl, bis (tripropyl phosphine) iron tricarbonyl, bis(tricyclohexyl phosphine) iron tricarbonyl, bis(tri dodecyl phosphine) iron tricarbonyl bis(tri[-o-tolyl]phosphine) iron tricarbonyl, bis(tribenzyl phosphine) iron tricarbonyl, bis(tri octadecyl phosphine) iron tricarbonyl. These compounds are not as good stabilizers as the nickel compounds.

Type 6 where R is as defined above and R is H or lower alkyl, e.g. methyl cyclopentadienyl manganese dicarbonyl trimethylol propane phosphite (hereinatefer called Compound 6), methyl cyclopentadienyl manganese dicarbonyl trimethylol ethane phosphite, methyl cyclopentadienyl manganese dicarbonyl pentaerythritol phosphite, methyl cyclopentadienyl manganese dicarbonyl trimethylol pentane phosphite, methyl cyclopentadienyl manganese dicarbonyl trirnethylol heptadecane phosphite, cyclopentadienyl manganese dicarbonyl trimethylol propane phosphite, cyclopentadienyl manganese dicarbonyl trimethylol ethane phosphite, cyclopentadienyl manganese dicarbonyl pentaerythritol phosphite, ethyl cyclopentadienyl manganese dicarbonyl trimethylol propane phosphate, propyl cyclopentadienyl manganese dicarbonyl pentaerythritol phosphite. These compounds are new per se.

Type 7 R11 R12 R11 R12 I Ni 0 0 o f/ (I) R13 0 .42 where R and R are hydrogen or lower alkyl and R is lower alkylene of at least 2 carbon atoms or alkylene oxyalkylene such as nickel bis[bis(2,2-dimethyl-1,3-propylene) neopentylene phosphite] (hereinafter called Compound 7), nickel bis[bis(l,2-propylene) trimethylene phosphite], nickel bis[bis(1,3-propylene) neopentylene phosphite], nickel bis [bis(2,2-dimethyl-1,3-propylene) diethylene glycol phosphite], nickel bis[bis(2-methyl-1,3- propylene) 2-methyl propylene phosphite], nickel bis[bis- (2,2-diethyl-1,3-propylene) 2,2-diethyl propylene phosphite], nickel bis [bis(2-hexy1-1,3propylene)-trimethylene glycol phosphite], nickel bis[bis(2Fpropyl-1,3-propylene)- dipropylene glycol phosphite], nickel bis[bis(2,2-dimethyl-1,3-propylene) dodecamethylene glycol phosphite]. The nickel phosphite complexes of the present invention (both Type 7 and the others as well) unlike most other nickel complexes used as stabilizers do not impair the heat stability of the polypropylene and other polymers. The compounds having the neopentylene group, particularly Compound 7, are preferred. The compounds of Type 7 are new per se.

Type 7(a) l0\ /0 R1 a R20 OR: 2

where R R and R are as defined above or R and R are halo lower alkyl where the halogen has an atomic weight of 35 to 80, e.g. nickel bis[ethylene bis(diphenyl phosphite)], nickel bis[neopentylene bis(dilauryl phosphite)], nickel bis[propylene bis(decyl phenyl phosphite)], nickel bis[diethylene glycol bis (diethyl phosphite], nickel bis[dipropylene glycol bis (didecyl phosphite)], nickel bis[hexylene bis(distearyl phosphite) nickel bis[trimethylene bis(dieicosanyl phosphite)], nickel bis[l,3-butylene bis(di-p-tolyl phosphite)], nickel bis[neopentylene bis (di-2-chloroethyl phosphite)], nickel bis[ethylene bis(di-Z-bromopropyl phosphite) The compounds of Type 7(a) are not as stable as those of Type 7 and hence the compounds of Type 7 are preferred thereo Ni[P ([CHzhO l-B10314 where R is alkyl of 1 to 3 carbon atoms, e.g. nickel tetrakis. [tris(3-acetoxypropyl phosphine)] (hereinafter called Compound 8), nickel tetrakis [tn's(3-propionoxypropyl phosphine) and nickel tetrakis [tris(3-butyroxypropyl phosphine) The starting phosphines are prepared by reacting phosphine with allyl acetate, propionate or buty'rate. The compounds of Type 8 are new per se.

(|)R15 4 where R and R are as defined above and R is aryl such as nickel tetrakis (2,2-dimethyl-1,3-propylenephenyl phosphite) (hereinafter called Compound 9), nickel tetrakis (1,3-propylene phenyl phosphite), nickel tetrakis (2-methyl-1',3-propylene phenyl phosphite), nickel tetrakis (2,2-diethyl 1,3 propylenephenyl phosphite), nickel tetrakis (2,2-dimethyl-1,3-propylene ptolyl phosphite), nickel tetrakis (2,2-dimethyl-LEI-propylene p-nonylphenyl phosphite). The compounds of Type 9' are new per se.

Type 10 where R is as R or is chloroalkyl, e.g. nickel tetrakis (o-phenylenephenyl phosphite) (hereinafter called Compound 10), nickel tetrakis (o-phenylene cyclohexyl phos- 1 phite) (M.P. l28l30 C., a white solid decomposing at 230), nickel tetrakis (o-phenylene decyl phosphite), nickel tetrakis (o-phenylene naphthyl phosphite), nickel tetrakis (o-phenylene benzyl phosphite), nickel tetrakis (o-phenylene octadecyl phosphite), nickel tetrakis (o-phenylene methyl phosphite), nickel tetrakis (o-phenylene p-nonylphenyl phosphite), nickel tetrakis (o-phenylene 2-chloroethyl phosphite). The aryl derivatives are not as good as the alkyl, cycloalkyl or chloroalkyl. The cyclohexyl derivative was the best stabilizer of this type. The compounds are new per se.

Type 11 where R and R are as defined above, e.g. nickel tetrakis (dilauryl pentaerythritol diphosphite), nickel tetrakis (distearyl pentaerythritol diphosphite), nickel tetrakis (dieicosaryl pentaerythritol diphosphite), nickel tetrakis (diphenyl pentaerythritol diphosphite), nickel tetrakis (dicyclohexyl pentaerythritol, diphosphite), nickel tetrakis (didecyl pentaerythritol diphosphite), nickel tetrakis (dibenzyl pentaerythritol diphosphite), nickel tetrakis dicyclohexyl pentaerythritol diphosphite). The compounds are new per se.

Type 11 (b) Nickel tetrakis (tricyclohexyl phosphine), an oil-white solid M.P. 186-189 C., a new compound prepared in the same way as known nickel hydrocarbyl phosphines of the formula R1 [RQP] Ni 3 4 where R R and R are as defined above.

where X is a halogen such as nickel tetrakis ,(o-phenylene chlorophosphite) a white solid, M.P. 165-169 C., decomposes 17 C.), nickel tetrakis (o-phenylene brornophosphite), nickel tetrakis (o-phenylene iodophosphite). These secondary phosphite complexes showed fair stabilizing activity. They are new per se.

Ni H P-ORn where R is as defined above and R is hydrogen or alkyl, such as nickel tetrakis (o-cyclohexylene phenyl phosphite), nickel tetrakis (o-cyclohexylene cyclohexyl phosphite), nickel tetrakis (o-cyclohexylene lauryl phosphite), nickel tetrakis (o-cyclohexylene benzyl phosphite), nickel tetrakis (o-cyclohexylene 2-chloroethyl phosphite), nickel tetrakis (o-[p-t-butyl] cyclohexylene cyclohexyl phosphite), nickel tetrakis (o cyclohexylene 2,3-dibromopropyl phosphite), nickel tetrakis (o-[p-ethyl] cyclohexylene decyl phosphite). The compounds are new per Type 11 (e) 0 CH2 CHzO where R and R are as defined above or haloalkyl, e.g. nickel bis(distearyl pentaerytln'itol diphosphite) (M.P. 57-63, a soft waxy solid), nickel bis(di-2-brornopropyl pentaerythritol diphosphite), nickel bis(dilauryl pentaerythritol diphosphite), nickel bis(di-2-chloroethyl pent-aerythritol diphosphite), nickel bis(di2,3-dichloropropyl pentaerythritol diphosphite), nickel bis(diphenyl pentaerythritol diphosphite), nickel bis(dicyclohexyl pentaerythritol diphosphite). The compounds are new per se.

Type 1 1 (f) R1 [IMEP] NiXi where R R and R are as defined above and X is halogen, e.g. bis(tricyclohexylphosphine) nickel dichloride (a pink solid decomposing at 262 C.), bis(tricyclohexylphosphine) nickel dibromide, bis(tri lauryl phosphine) nickel dichloride, bis(triphcnyl phosphine) nickel dichloride, bis(tribenzyl phosphine) nickel dichloride. This group is ionic type complexes. They are new per se.

Type 12 where R R and R are as defined above and X is halogen, e.g. bis(2,2-dimethyl-1,3-propy1ene phenyl phosphite) cuprous iodide (hereinafter called Compound 12), bis(2,2 dimethyl 1,3-propylene cyclohexyl phosphite) cuprous iodide, bis(2,2-dimethyl-1,3-propylene lauryl phosphite) cuprous iodide, bis(2,2-dimethyl-1,3-propylene stearyl phosphite) cuprous chloride, bis(2,2-dimethyl-1,3- propylene decyl phosphite) cuprous bromide, bis(l,3- propylene cyclohexyl phosphite) cuprous iodide. This type of compound did not give particularly outstanding results. They are new per se.

Type 12(a) Nickel complexes wherein the phosphorus material also contains nitrogen, e.g. nickel tetrakis (tris[pentamethyleneamine] phosphine) nickel tetrakis (tris[dimethylaminoethyl] phosphite), nickel tetrakis (tris [diethylaminoethyl] phosphite), nickel tetrakis (tris [dipropylaminopropyl] phosphite), tris (2- [N-dimethylamino] ethyl phosphite) nickel carbonyl (Compound 39), [P(OCH CH N[CH NiCO), tris (Z-[N-diethylamino] propyl phosphite) nickel carbonyl, tetrakis (N-dimethylamino-ethylene phosphite) nickel.

l O Rm 4 where R and R are as defined above and R is alkyl, aralkyl, cycloalkyl or lower haloalkyl such as nickel tetrakis (2,2-dimethy1-1,3-propylene cyclohexyl phosphite) (hereinafter called Compound 13), nickel tetrakis (2,2- dirnethyl-1,3-propylene lauryl phosphite (a colorless oil), nickel tetrakis (2,2-dimethyl-1,3-propylene stearyl phosphite), nickel tetrakis (2,2 dimethyl 1,3-propylene 2- chloroethyl phosphite), nickel tetrakis (2,2-dimethyl-l,3- propylene methyl phosphite), nickel tetrakis (1,3-propylene cyclohexyl phosphite), nickel tetrakis (2,2-diethyl-l,3- propylene cyclohexyl phosphite), nickel tetrakis (2,2-dimethyl-1,3-propy1ene 2,3-dibrornopropyl phosphite), nickel tetrakis (2-methyl-l,3-propylene isooctyl phosphite), nickel tetrakis (2-propyl-1,3-propylene methyl cyclohexyl phosphite), nickel tetrakis (2-hexyl-l,3-propylene eicosanyl phosphite), nickel tetrakis (2,2-dimethyl-l,3-propylene cyclopentyl phosphite), nickel tetrakis (2,2-dimethyl- 1,3-propylene cycloheptyl phosphite), nickel tetrakis (2,2- d'imethyl 1,3 propylene benzyl phosphite). The compounds of Type 13 are better stabilizers than those of Type 9. In general, the presence of the alkyl and particularly the cycloalkyl group in the phosphite portion of the molecule gives better results than an aryl group. The compounds are new per se.

Type 14 where R is as defined above and X is halogen, e.g. bis(ophenylene phenyl phosphite) cuprous iodide (hereinafter called Compound 14), bis (o-ph enylene phenyl phosphite) cuprous chloride, bis(o-phenylene phenyl phosphite) cuprous bromide, bis(o-pheny'lene methyl phosphite) cuprous chloride, bis(o-phenylene decyl phosphite) cuprous bromide, bis(o-phenylene octadecyl phosphite) cuprous iodide, bis(o-phenylene cyclohexyl phosphite) cuprous iodide, bis(o-phenylene benzyl phosphite) cuprous bromide, bis(o-phenylene m-tolyl phosphite) cuprous. These compounds did not have outstanding activity. The compounds are new per se.

Type 15 where R R R and R are as defined above, e.g. methyl cyclopentadienyl managanese dicarbonyl triphenyl phosphine (Compound methyl cyclopentadienyl manganese dicarbonyl tricyclohexyl phosphine, methyl cyclopentadienyl manganese dicarbonyl trimethyl phosphine, methyl cyclopentadienyl manganese dicarbonyl tristearyl phosphine, methyl cyclopentadienyl manganese dicarbonyl didecyl phenyl phosphine, methyl cyclopentadienyl manganese dicarbonyl tribenzyl phosphine, methyl cyclopentadienyl manganese dicarbonyl tri m-tolyl phosphine, cyclocyclopentadienyl manganese dicarbonyl trilauryl phosphine, cyclopentadienyl manganese dicarbonyl trieisosanyl phosphine, ethyl cyclopentadienyl manganese dicarbonyl triphenyl phosphine, propyl cyclopentadienyl manganese dicarbonyl triisooctyl phosphine. These compounds show 14 better activity than those of Type 14. They are new per se.

Type 16 R210 [R220 P] NlCO where R R and R are alkyl or aryl or aralkyl or haloalkyl, e.g. tris(triisodecyl phosphite) nickel carbonyl, (hereinafter called Compound 16), tri(trineopentyl phosphite) nickel carbonyl (a new compound which is a white solid M.P. 162-175 C.) tris(tri-[2-chlorethyl] phosphite) nickel carbonyl, tris(tri-[3-bromo propyl] phosphite) nickel carbonyl, tris(trimethyl phosphite) nickel carbonyl, tris (octyl didecyl phosphite) nickel carbonyl, tris(ethyl butyl dodecyl phosphite) nickel carbonyl, tris(trioctodecyl phosphite) nickel carbonyl, tris(tri eicosanyl phosphite) nickel carbonyl, tris(tribenzyl phosphite) nickel carbonyl, tris(tripheny1 phosphite) nickel carbonyl, tris(tri-p-nonylphenyl phosphite) nickel carbonyl, tris(diphenyl decyl phosphite) nickel carbonyl. These compounds showed moderately strong stabilizer activity.

Type 17 where R R and R are as defined above, e.g. tetrakis (triphenyl phosphite) nickel (hereinafter called Compound 17), tetrakis (tridecyl phosphite) nickel tetrakis (tricyclohexyl phosphite) nickel, tetrakis(triethyl phosphite) nickel, tetrakis (trioctadecyl phosphite) nickel, tetrakis (tribenzyl phosphite) nickel, tetrakis(tri alpha naphthyl phosphite) nickel. The triaryl compounds of Type 17 had relatively poor stabilizer activity.

Type 18 /CH2O [RrCqCHQOEP] W(C 0); 01120 2 where R is as defined above, e.g. bis (trimethylol ethane phosphite) tungsten tetracarbonyl (hereinafter called Compound 18), bis(trimethylol propane phosphite) tungsten tetracarbonyl, bis(pentaerythritol phosphite) tungsten tetracarbonyl, bis(trimethylol pentane phosphite) tungsten tetracarbonyl, bis(trimethylol heptadecane phosphite) tungsten tetracarbonyl. These compounds; are new per se.

Type 19 wherein R R and R are cycloalkyl, e.g. tris (tricyclohexyl phosphite) nickel carbonyl, tris(tri[methylcyclohexyl] phosphite) nickel carbonyl, tris(tricycloheptyl phosphite) nickel carbonyl, tris(tricyclopentyl phosphite) nickel carbonyl. These compounds are new per se. They have outstanding actvity. In general the presence of the cycloalkyl group, particularly cyclohexyl, gives better stabilizing results than where it is replaced by aryl, e.g. phenyl, or alkyl, e.g. decyl. Mixed cycloalkyl, aryl or alkyl phosphite complexes can be used, e.g. tris- (dicyclohexyl decyl phosphite) nickel carbonyl, tris(dicyclohexyl phenyl phosphite) nickel carbonyl, tris(cy.- clohexyl bis[p-nonylphenyl] phosphite) nickel carbonyl, tris(cycl0hexyl dilauryl phosphite) nickel carbonyl.

Type 20 where at least one of R and R is halo lower alkyl of at least 2 carbon atoms and the balance of R25, R and R are halo lower alkyl, alkyl, aryl, cycloalkyl or aralkyl, e.g. tetrakis (tris 2-chloroethyl phosphite) nickel (hereinafter called Compound 20, MP. with decomposition 215 C., literature reports 13 8-140 C.), tetrakis (tris 2 bromoethyl phosphite) nickel, tetrakis (tris 2- chloropropyl phosphite) nickel, tetrakis (tris 2,3-dichloropropyl phosphite) nickel, tetrakis (tris 3-bromopropyl phosphite) nickel, tetrakis (bis 2-chloroethyl cyclohexyl phosphite) nickel, tetrakis (Z-chloroethyl dicyclohexyl phosphite) nickel, tetrakis (bis 2,3-dichloropropyl phenyl phosphite) nickel, tetrakis (bis 2-chloroethyl decyl phosphite) nickel, tetrakis (bis 2-chloroethyl p-nonylphenyl phosphite) nickel, tetrakis (bis 2-bromoethyl benzyl phoshite).

p Compound gave outstanding results. It was not as good as the corresponding cyclohexyl compound but was much more economical to produce.

Type 21 11 R (E--O O- where R R and R are as defined above e.g. bis(triethylene diphosphite) nickel (hereinafter called Compound 21), bis(tripr0pylene diphosphite) nickel, bis(bis [ethylene] diethylene glycol phosphite) nickel, bis(bis- [1,2-dibutyl ethylene] hexamethylene phosphite) nickel, bis(bis[l-methyl-2-propyl ethylene] dipropylene glycol phosphite) nickel. These compounds are new and have good stabilizer activity. In general, the higher the amount of nickel and of phosphorus in the heterocyclic compounds such as Types 1, 7, 9, 13, 21, 23 and 26, the better the stabilizer activity. The presence of the cyclohexyl group and the neopentyl group also is advantageous as previously set forth.

Type 22 (CH CHCH O P] Ni This compound is tetrakis (triallyl phosphite) nickel (hereinafter called Compound 22). It has good stabilizer activity. It appears to be polymeric. Similar results can be obtained with tetrakis (trimethallyl phosphite) nickel. These compounds are novel per se.

1 6 Type 24 01120 bis(pentaerythritol phosphite) nickel dicarbonyl (hereinafter called Compound 24).. This compound is new.

Type 25 tetrakis(pentaerythritol phosphite) nickel (hereinafter called Compound 25). This compound is new.

where R R R and R are as defined above such as tris(neopentylene glycol phenyl phosphite) trilauryl trithiophosphite nickel (hereinafter called Compound 26), tris(neopentylene glycol cyclohexyl phosphite) trilauryl trithiophosphite nickel, tris(neopentylene glycol lauryl phosphite) trilauryl trithiophosphite nickel, tris(neopentylene glycol cyclohexyl phosphite) tricyclohexyl trithiophosphite nickel, tris(neopentylene glycol 2-chloroethyl phosphite) tricyclohexyl trithiophosphite nickel tris- (neopentylene glycol cyclohexyl phosphite) trioctyl trithiophosphite nickel, tris(neopentylene glycol cyclohexyl phosphite) trioctadecyl trithiophosphite nickel, tris(trimethylene glycol methyl phosphite) trieicosanyl trithiophosphite nickel, tris(l methyltrimethylene glycol cyclohexyl phosphite triphenyl trithiophosphite) nickel, tris- (neopentylene glycol benzyl phosphite) tribenzyl trithiophosphite nickel.

The compounds are good stabilizers and those wherein the R groups are cyclohexyl are better than those wherein the R groups are phenyl. The compounds are new per se.

Type 27 Where R R and R are as defined above and n is 2 or 3 such as tris (triphenylphosphine) tungsten tricarbonyl (hereinafter called Compound 27), tetrakis (tributylphosphine) tungsten dicarbonyl (a dark oil), tris (trioctyl phosphine) tungsten tricarbonyl, tris(tricyclohexyl phosphine) tungsten tricarbonyl, tetrakis(tricyclohexyl phosphine) tungsten dicarbonyl, tris(trieicosanyl phosphine) tungsten tricarbonyl, tris(tribenzyl phosphine) tungsten tricarbonyl, tris (triethyl phosphine) tungsten tricarbonyl, tetrakis(triphenyl phosphine) tungsten dicarbonyl, tetrakis (tribenzyl phosphine) tungsten tungsten dicarbonyl, tetrakis (trioctadecyl phosphine) tungsten dicarbonyl. These compounds are new. They are colored and hence their desirability is reduced where the product should not have such color.

There can also be employed the tungsten carbonyl analog of the nickel compounds of Type 9, e.g. bis(2,2- dimethyl-1,3-propylene neopentyl phosphite) tungsten tetracarbonyl, bis(2,2-dimethyl-1,3-propylene decyl phosphite) tungsten tetracarbonyl, bis(1,3-propylene phenyl phosphite) tungsten tetracarbonyl, bis(2-methyl-l,3-propylene benzyl phosphite) tungsten tetracarbonyl, bis(2,2- dimethyl-1,3-propylene cyclohexyl phosphite) tungsten tetracarbonyl, bis(2,2-dimethyl 1,3-propylene 2-chloroethyl phosphite) tungsten tetracarbonyl.

In preparing compounds of the type Me(L) (A (L) which contain the L grouping, e.g. where Me is nickel and L is a phosphite, the si'inplest procedure is to add the nickel halide to the phosphite in an organic solvent such as alcohol or dioxane. Thus there can be mixed 4 mols of pentaerythritol phosphite with 1 mol of nickel dichloride in alcohol to form tetrakis (pentaerythritol phosphite) nickel dichloride. In similar fashion, 4 mols of trimethylolpropane phosphite with 1 mol of nickel dibromide form tetrakis (trimethylol propane phosphite) nickel di'bromide. In like manner, there are formed tetrakis (tricyclohexyl phosphite) nickel dichloride, tetrakis (trioctadecyl phosphite) nickel dichloride, tetrakis (triethyl phosphite) nickel dibromide, tetrakis (triphenyl phosphite) nickel dichloride, tetrakis (tribenzyl phosphite) nickel dibromide.

The corresponding nitrates, perchlorates and RCOO- salts can be formed readily by replacing the halogen from the above-identified dihalides by interchange. The perchlorates can also be made directly in a manner analogous to the halides. The organic acid salts can be acetate, propionates, butyrates, benzoates, etc. As previously pointed out, there also can be used known salts such as tetrakis (triphenyl phosphine) nickel dibromide, tetrakis (tricyclol'iexyl phosphine) nickel dichloride, tetrakis (trioctyl phosphine) nickel dichloride.

Below there are given the methods of preparation for some of the novel compounds and old compounds useful in the invention.

COMPOUND 1 19.5 grams of Ni(CO') were added under nitrogen to a flask. Then there were added 18.6 grams of trimethylol propane phosphite in 100 ml. of chlorobenzene. This was stirred until gas evod-lution ceased. Then there was added 55.8 grams more of trimethylol propane phosphite in 100 ml. of chlorobenzene and the mixture heated to reflux overnight. Then an additional 7 grams of trimethylol propane phosphite were added and the mixture heated at reflux for 6 hours. The mixture was cooled. LR. analysis showed no metal carbonyl. The product was filtered and the crystalline solid dissolved in hot mother liquor and filtered hot. There was a considerable amount of material precipitated on the filter. The cake was extracted with hot chloroform, filtered and the pale green cake dried.

The filtrate was concentrated until while crystals separated (evaporation was almost to dryness), the solid slurried in hexane, filtered and dried. Both cakes were dried over night.

The first crop was-8.3 grams of a pale green solid and the second crop was 7.9 grams of a white crystalline solid.

The chlorobenzene solution was distilled to remove about 50% of the solvent under reduced pressure from the initial filtrate. A thick white slurry was obtained.

100 m1. of hexane was added. The product was insoluble therein and was recovered by filtering. The white cake was dried in a vacuum oven for about 4 hours to remove all solvent.

Yield 55 grams as a third crop. This third crop was dried in an air oven at 250 F. to remove traces of chlorobenzene. Yield of dried third crop 53.6 grams.

COMPOUND 4 26.4 grams (0.1 mol) of molybdenum hexacarbonyl and 97.2 grams (0.6 mol) of trimethylol propane phosphite were charged to a flask and then 123 grams of chlorobenzene were added and heating was started and continued to reflux at 140 C. Refiuxed overnight, the solution was light yellow. Heated for one more hour and then began cooling. A pale yellow precipitate was filtered off and washed with about ml. of fresh chlorobenzene and then twice with 50 ml. of hexane. Yield 45.1 grams, M.P. 260 (decomposition). LR. analysis indicated the compound was Compound 4.

18 COMPOUND 6 There was added to a flask 21.8 grams (0.1mol) of methylcyclopentadienyl manganese tricarbonyl, 16.2

grams (0.1 mol) of trimethylol propane phosphite and grams of benzene. At 26 C., the mixture was irradiated with ultraviolet light and stirred overnight 17.5 hours irradiation). The next morning the temperature was 60 C. and the ultraviolet lamp was cut off. The product was again irradiated for 16 hours at about 50 C. and then irradiated for 8 hours. The following day yellow crystals were recovered by filtration. There were obtained 15.57 grams (40% yield) of Compound 6, M.P. (ISO- flows) -180" C. clear melt. The product Was insoluble in 'water or heptane soluble in acetone and soluble in hot alcohol.

COMPOUND 7 Procedure 1 The same compound was prepared (M.P. 255260 C.) by mixing 23 grams (0.0625 mol) of bis (2,2-dimethyl-1,3-propylene) neopentylene phosphite and 5.35 grams (0.0313 mol) of nickel tetracarbonyl in 100 ml. chlorobenzene. The temperature rose to 40 C. during the addition. The mixture was irradiated for 24 hours with ultraviolet light while a Dry Ice condenser was attached to the flask. Then the mixture was heated to reflux and stripped as in procedure 1 to give the product.

Procedure 3 The same compound was prepared from 72 grams (0.195 mol) of his (2,2-dimethyl-1,3-propylene) neopentylene phosphite, 150 ml. p-xylene and 16.2 grams (0.095 mol) of Ni(CO) in 100 ml. of p-xylene and heating by Method A. The yield was 43.5 grams (80 of theory).

Procedure 4 16.5 grams of tetrakis (trimethyl phosphite) nickel (Compound 36) was treated with 36.8 grams (0.1 mol) of his (2,2-dimethyl-1,3-propylene) neopentylene phos- CHzO and heated to 150 C./ l5 mm. 80 ml. xylene was added and distillation resumed, first at room pressure and then in a vacuum. The residue weighed 46.5 grams.

COMPOUND 9 Using Method A, 8.6 grams (0.05 mol) of nickel tetracarbonyl and 150 ml. of chlorobenzene were placed in a flask and 47.5 grams (0.21 mol) of 2,2-dimethyl-1,3- propylene phenyl phosphite were added. The mixture was refluxed for 2.5 hours by which time all the 00 (about CH2O P-OCHz C (CH 4800 ml.) was removed. The mixture was then stripped to 150 C./'0.5 mm. to produce a white solid residue which was recrystallized from 80% hexane 20% benzene (by volume) to give a white solid M.P. 166-170 C., 23 grams, decomposed at 280 C.

The product was obtained in less pure form, M.P. 152- 153 C. by reacting 55.5 grams (0.24 mol) of 2,2-dimeth- 19 yl-1,3-propylene phenyl phosphite and 10.3 grams (0.06 mol) of Ni(CO) and irradiating with ultraviolet light for 24 hours followed by heating at .110 C. for 7 hours. The product was filtered and recovered as a white solid.

COMPOUND 10 48.5 grams (0.203 mol) of o-phenylene phenyl phosphite, 100 ml. of chlorobenzene and 8.2 grams (0.04775 mol) of Ni(CO) were placed in a flask and treated with ultraviolet light for 6.5 hours and then heated at reflux for 48 hours. The solvent was stripped off, 150 ml. of hexane added, the mixture heated to reflux and then cooled and filtered under nitrogen. There were recovered 49.9 grams of Compound 10 as a white crystalline solid, M.P. 110-116 C.

COMPOUND 1 1 40 grams of p-t-butylphenylene phenyl phosphite and 50 ml. of chlorobenzene were placed in a flask and 5.2 grams of Ni(CO) dissolved in 60 ml. of chlorobenzene were added. The mixture was stirred at room temperature for 1 hour, then 16 hours at 110 C. and then at reflux for 6 hours. It was allowed to stand overnight. LR. analysis showed no carbonyl. The product was stripped to 150/ 1 mm. leaving Compound 11 as a thick pale tan oily residue. Yield 38.5 grams.

COMPOUND 12 In a flask there were placed 150 ml. of benzene, 9.5 grams (0.05 mol) of cuprous iodide and 22.2 grams (0.10 mol) of phenyl neopentylene phosphite. The mixture was refluxed with stirring for 6 hours, filtered and stripped to yield Compound 12 as a white solid, M.P. 116-128 C. It was recrystallized from benzene/hexane (40/60 by volume), M.P. 113-127 C. The benzene/ hexane mother liquor from the recrystallization was stripped and there was recovered a white solid, M.P. 120136 C.

COMPOUND 13 Procedure 1 150 ml. of p-xylene, 39.0 grams (0.168 mol) of cyclohexyl neopentylene phosphite and 6.5 grams (0.0375 mol) of Ni(CO) in 100 ml. of p-xylene were allowed to react for 4 hours at a temperature up to 142 C. until no more CO was evolved. The residue was stripped of solvent. Compound 13 was recovered as a white crystalline material, M.P. 230232 C.

Procedure 2 25 grams (0.1075 mol) of cyclohexyl neopentylene phosphite, 4.6 grams (0.0269 mol) of Ni(CO) and 150 ml. of chlorobenzene were slowly heated to reflux until no CO was detected. The solvent was stripped ofl under vacuum. The residue was heated with 100 ml. of methanol, cooled to room temperature and the crystalline solid filtered 01f. M.P. 230232 C. with decomposition.

COMPOUND 15 Procedure 1 150 ml. of p-xylene, 31.5 grams (0.09 mol) of tricyclohexyl phosphite and 3.6 grams (0.021 mol) of Ni(CO) in 100 ml. of p-xylene were placed in a flask 20 and heated to reflux. There were collected 1900 m1. of evolved CO gas (theory 1900 ml.). The solution was cooled to room temperature and then stripped in a vacuum, finally at 40 C./ 0.05 mm. The residue was 29 grams of a very light green heavy viscous liquid. It had a M.P. of 130-155 C. after first recrystallization and 165l90 C. after second recrystallization.

Ni 5.47% (theory 5.5%).

Procedure 2 150 ml. of chlorobenzene, 83 grams (0.25 mol) of tricyclohexyl phosphite and 10.3 grams (0.06 mol) of nickel tetracarbonyl in 100 ml. of chloro benzene were allowed to react and the CO evolved collected. There were obtained 1300 ml. at room temperature, 1000 ml. at 26- C., 1500 ml. at 70-137 C. and 900 ml. upon refluxing for 6 hours at 137 C. or a total of 4700 ml. of CO (theory 5400 ml.). The solution was cooled to room temperature and then the solvent stirpped off in a vacuum. The residue was a black glass-like solid, weight 93 grams. It was recrystallized from a mixture of 100 m1. acetone and 200 ml. of methyl ethyl ketone by refluxing, adding 2 grams of charcoal at 65 C. and filtering. The filtrate was a clear, dark red solution. It was cooled to room temperature and the solid that precipitated filtered 011?. The filtrate was reduced to one-half volume and kept in the refrigerator for 4 hours. Crystallization occurred. The first crystals weighed 45.5 grams. The product was recrystallized from 100 ml. of acetone and 220 ml. of methyl ethyl ketone containing 2 grams of charcoal. There were recovered 30 grams of white crystals, M.P. 163186 C. which turned brown to black at 180186 C.

COMPOUND 20 Procedure 1 134 grams (0.5 mol) of tris 2-chloroethyl phosphite, 150 ml. of p-xylene and 19 grams (0.112 mol) of Ni(CO) in ml. of p-xylene were placed in a flask and the CO evolved as follows At Ml. 25 C, 3000 26-100 C. 5000 101-136 C. 1000 136-142 C. with refluxing for 1 hour 1000 The total CO evolved was 10,000 m1. (theory 10,000 ml.). The solution changed from a clear colorless solution to dark brown and then black at -110 C.

The mixture was heated at reflux four hours, cooled to room temperature and then vacuum stripped, terminal conditions being C./ 0.1 mm.

The residue in the pot was a heavy black liquid at 100 C. Upon cooling to room temperature, 109.5 grams of a black solid were recovered. It was recrystallized from acetone methanol. There were obtained 42 grams of crys tals, M.P. -175 C. to give a dark brown colored liquid with 20% unmelted. It decomposed at 200 C.

Recrystallization from heptane benzene gave 37 grams of product, M.P. -180 C. The chlorine analysis was 37.0% (theory 37.1%).

Procedure 2 67 grams of tris 2-chloroethyl phosphite were mixed with 75 ml. of chlorobenzene and 9.6 grams of Ni(CO) in 100 ml. of chlorobenzene added. The CO gas liberated first at room temperature and then by heating to 120 C. amounted to 5,100 ml. The mixture was then stripped of chlorobenzene and residue in the pot analyzed, CI 36.1%. The melting point was 214-215 C. 80% melted with discoloration, first turning brown and then black.

COMPOUND 21 100 ml. of chlorobenzene and 56 grams of triethylene diphosphite were placed in a flask and cooled to 5 C. Then there were added 18 grams (0.105 mol) of 21 Ni(CO) in 100 ml. of chlorobenzene. The CO gas evolved was collected by the water displacement method. There were collected at a pot temperature of- The total CO collected was 9000 ml. (theory 9400 ml.). The chlorobenzene was stripped from the reaction mixture. The residue in the pot was Compound 21, a light brown crystalline material in an amount of 60 grams. M.P. 300 C.

COMPOUND 22 There were placed in a flask 100 ml. of chlorobenzene, 8.5 grams (0.05 mol) of nickel tetracarbonyl and 11.0 grams (0.05 mol) of triallyl phosphite. About 1300 ml. of CO came 01f at room temperature. The solution turned from dark red to very light red. There were then added 11.0 grams (0.05 mol) more of triallyl phosphite and the mixture was stirred. Addition of triallyl phosphite was repeated at room temperature until a total of" 0.22 mol had been added. The mixture was then refluxed until the theoretical CO had evolved. The mixture was then stripped to give Compound 22 as a yellow solid M.P. 330 C., yield 40 grams.

The same product was obtained by mixing.44.5 grams (0.22 mol) of triallyl phosphite, 125 ml. of p-xylene and 8.6 grams (0.5 mol) of nickel tetracarbonyl-in a solution of 75 ml. of p-xylene all at once, allowing the CO initially released to leave the pot and then refluxing.

COMPOUND 23 8.6 grams (0.05 mol) of nickel tetracarbonyl in 150 ml. of p-xylene was placed in a flask and 28 grams (0.1 mol) of tricyclohexyl phosphine were added at room temperature. The mixture was heated to 50 C. and held for 1 hour to form his (tricyclohexyl phosphine) nickel dicarbonyl. Then at about 30 C., there was added 0.05 mol of his (2,2-dimethyl-1,3-propylene) neopentylene phosphite and the mixture heated to reflux until no further CO came off. The mixture was stirpped at 80 C./0.5 mm. to leave a white residue of 34 grams. This was recrystallized from methanol to give 25 grams of Compound 23, M.P. 275-277 C., decomposed 325 C.

COMPOUND 24 Pentaerythritol phosphite 6.6 grams (0.038 mol) was melted and dissolved in 250 ml. of p-xylene. There were added 13.2 grams (0.077 mol) of Ni(CO) in 100 ml. of p-xylene. Vigorous evolution of CO gas was noted at a temperature which rose to 35 C. The mixture was heated and the CO gas evolved collected at 25 to 142 C. Milky white crystals formed and were separated from the solvent after cooling to room temperature. The solid was stirred and refluxed with 200 ml. of isopropanol for 10 minutes, filtered and dried to give 36 grams of a white solid M.P. 330 C. I.R. analysis showed plus for metal carbonyl.

COMPOUND 25 Procedure 1 "125 ml. of Z-butoxyethanol (solvent), 25 grams (0.15 mol) of pentaerythritol phosphite and'5.7 grams (0.034 mol) of Ni(CO) in 125 ml. of 2-butoxyethanol were placed in a flask The CO. evolved was collected, initially at room temperature and then with heating to 174 C. until no more CO gas was given ofl. There were collected 3,350 ml. of CO (theory 3,350). The mixture was cooled to room temperature. The white crystals formed were separated from the solvent and washed with 50 ml. of acetone. The yield of Compound 25 was 18.5 grams (77% of theory). The nickel complex Was insoluble in acetone while the starting pentaerythritol phosphite was acetone soluble. i

Procedure 2 Compound 25 was also prepared by mixing 20 grams (0.122 mol) of pentaerythritol phosphite, 150 ml. of dibutyl ether and 5 grams (0.03 mol) of Ni(CO) slowly heating to reflux and collecting 2950 ml. of CO (theory 2700 ml. CO). The mixture was cooled to room temperature, filtered and the solid washed with hexane, isopropanol, and acetone and dried. Yield 21 grams (theory 21 grams). M.P. 330 C.

Ni 8.50% (theory 8.23%).

Procedure 3 51 grams (0.31 mol) of pentaerythritol phosphite and 250 ml. of dibutyl ether were cooled to 0 C. and 12.5 grams (0.073 mol) of Ni(CO) in 50 ml. dibutyl ether were added. The mixture was allowed to react and the CO evolved collected as the temperature was increased to 142 C. The total CO collected was 6500 ml. (theory 6500 ml.). A white solid came out of solution. The mixture was cooled to room temperature and filtered. The solid was washed with 200 ml. of hexane. The solid was stripped to dryness at C./20 mm. for 2 hours and then at 80 C./0.1 mm. for 15 minutes. Yield 50 grams (99% No melting was noted at 310 C.

COMPOUND 26 200 ml. of chlorobenzene and 8.5 grams (0.05 mol) of Ni(CO) were placed in a flask and there were added portionwise 31.7 grams (0.05 mol) of trilauryl trithiophosphite. The mixture was heated up to 60 C. The CO evolved equaled 1000 ml. (theory for 100% evolution is 4500 ml.). Then there were added portionwise 34 grams (0.15 mol) of phenyl neopentylene phosphite. There were evolved 3000 ml. of CO upon heating to 136 C. and maintaining for 0.5 hour. The mixture was cooled to room temperature and left over the weekend. The mixture was then heated to reflux at 136 C. and held for 4 hours. 600 ml. of CO were collected. The total CO collected was 4600 ml.

The solution in the flask was black colored. It was cooled to room temperature and the solvent stripped in a vacuum to a final temperature of 70 C./0.1 mm. The residue was a semi-solid black mass. It was cooled to room temperature and was a semi-solid black mass. The mass was heated to C. in an oil bath.

Next, the residue was dissolved in ml. of heptane and heated to reflux. Then there were added 3 grams of decolorizing charcoal, refluxed for 30 minutes and filtered to give 24 grams of Compound 26 as an ofl-white (brownish) solid. It was recrystallized from a mixture of 775 ml. of hexane and 25 ml. of benzene to yield 18 grams of an off-white solid, M.P. 157-158 C., decomposed C.

Ni 4.62% (theory 4.28%).

COMPOUND 28 (Tetrakis tricyclohexyl phosphine) nickel There were placed in a flask 75 ml. of chlorobenzene and 32 grams (0.114 mol) of tricyclohexyl phosphine. To the solution was added 4.8 grams (0.028 mol) of nickel tetracarbonyl in 100 ml. of chlorobenzene. The mixture was refluxed for 4 hours to remove C0 (about 2780 ml.). The mixture was then stripped to yield a dark blue solid which was dissolved in chlorobenzene. Toluene was added to precipitate Compound 28 as a pale blue solid, M.P. 186189 C., yield 17.1 grams.

COMPOUND 29 Tetrakis (dodecyl neopentylene phosphite) nickel There were placed in a flask 44 grams (0.138 mol) of dodecyl neopentylene phosphite (2-dodecoxy-5,5-dimethyl 1,3,2-phosphorinane) and 75 ml. of p-xylene. At room temperature, there were added 5.5 grams (0.032 mol) of Ni(CO) in 100 ml. of p-xylene. After refluxing 23 as in Method A, 3050 ml. of CO were removed. The residue after removal of solvent was a colorless oil in an amount of 45.7 grams. It analyzed Ni 4.35% (theory 4.45%).

COMPOUND Bis (2,2-dirnethyl-l,3-propy1ene) neopentylene glycol phosphite tungsten tetracarbonyl 7.04 grams (0.02 mol) of W(CO) and 150 ml. of xylene were placed in a flask and 7.4 grams (0.02 mol) of his (2,2-dimethyl-1,3-propylene) neopentylene glycol phosphite added and the mixture heated to reflux. After 18 hours at reflux, 300 m1. of CO evolved (theory for complete CO removal is 896 ml.). The mixture was then irradiated with ultraviolet light, first for 7 hours and then allowed to run another 24 hours. The mixture was stripped and Compound 30 recrystallized from first butanol and then isopropanol as a white solid, M.P. 200- 220 C., decomposed 245 C., yield 4 grams.

COMPOUND 31 Tris (tris neopentyl phosphite) nickel monocarbonyl COMPOUND 32 Bis (dioctadecylpentaerythritol diphosphite) nickel Procedure 1 OCH? grams (0.062 mol) of dioctadecyl pentaerythritol diphosphite and 200 ml. of chlorobenzene were placed in a flask and 5 grams (0.030 mol) of Ni(CO) in ml. of chlorobenzene added. The mixture was slowly heated to reflux until no more gas evolved. 2300 ml. of CO were collected. Five more grams of dioctadecyl pentaerythritol phosphite were added to the reaction mixture which was refluxed for another 1.5 hours. The total CO collected at this point was 2550 ml. Then another 5 grams of the phosphite were added and heating continued for another 1 hour at which time a total of 2700 ml. of CO had evolved. After standing over the weekend, the reaction mixture was stripped, first at the aspirator and then at 0.5 mm. The residue was a yellow oil. It was treated with methanol to yield a white solid, yield 13 grams, M.P. -66 C.

Procedure 2 grams.

COMPOUND 33 Tetrakis (tris[dimethylaminoethyl] phosphite) nickel 150 ml. of p-xylene, 50 grams (0.17 mol) of tris (dimethylaminoethyl) phosphite were placed in a flask and 6.8 grams (0.04 mol) of Ni(CO).;, in m1. of p-xylene were added dropwise. The CO evolved was collected, 1000 ml. at 25 C., 1000 ml. at 2680 C., 1 000 ml. at 81-140" C. and 600 ml. at 141-142" C. or a total of 3600 ml. (theory 3600 ml.). The mixture was refluxed at 141 C. for 1 hour and then stripped of solvent eventually in a vacuum at C./0.1 mm. The residue of 49.5 grams was a light brown liquid. 1

Since I.R. analysis showed some carbonyl, 24 grams of the product was mixed with 26 grams of tri (dimeth ylaminoethyl) phosphite to form a light brown solution. This was heated to C. for 3 hours and then Stripped at C./0.1 mm. to remove the excess tris (dimethylaminoethyl) phosphite. The residue in the pot (Compound 33) was a heavy yellow liquid. Yield 21 grams.

COMPOUND 34 Tris (piperidyl) phosphine tris (phenyl neopentylene phosphite) nickel 11.5 grams (0.04 mol) of tris (piperidyl) phosphine, 75 ml .fof p-xylene and 6.85 grams (0.04 mol) of Ni( CO) in 75 ml. of p-xylene were allowed to react at roomtem perature and the CO evolved was collected in an amount of 950 ml. (theory 900 mL). Then there were added 30 grams (0.13 mol) of phenyl neopentylene,phosphiteand the mixture heated to 142 C. There were collectedan additional 2850 ml. of QOnThe totalCO evolved was 3800 ml. theory 3600 ml.).-The solvent was removed by stripping, eventually in a vacuum. The residue was a white solid, yield 45.5 grams. It was recrystallized from hexane to give 20 grams of a white solid, M.P. 137168 C.

(The filtrate was dried to yield a further 13 grams of a white solid, M.P. 119122 C.)

The 20 grams of solid were recrystallized from hexane to give Compound 34 as a crystalline precipitate, M.P. 155-162 C. The hexane solution was" evaporated to recover additional solids, M.P. 144148 C.

COMPOUND 35 Tetrakis (N-diethylamino-ethylene phosphite) nickel C1120 I P N(C H 2 5 2 l CHQO l 35 grams (0.215 mol) of ethylene diethylamidophosphite CHZO I P-N C H, CHQO and 125 ml. of p-xylene were placed in a flask and there were added 8.5 grams (0.05 mol) of Ni(CO) in 75 ml. of p-xylene. The mixture was allowed to react, first at room temperature and then up to 142 C. The CO evolved was collected in an amount of 4500 ml. (theory 4480 ml.).

The solution was solvent stripped. Compound 35 was recoveredin a yield of 37.5 grams (100% of theory), M.P. 8485" C.

COMPOUND 36 .Tetrakis(trimethyl phosphite). nickel There were placed in a flask 100 ml. of oxylene and 37 gms. (0.30 mole) of trimethyl phosphite. To.the solution was added 8.6 grams (0.05 mole). of nickel tetracarbonyl in 75 m1. of xylene. Themixture was refluxed. for 3 hours to remove the CO. The mixture was stripped at 75/0.5 mm. There were obtained 40 grams .of compound 36 as a white solid. i

27 vinyl chloroacetate, chlorostyrenes, vinyl bromide and chlorobutadienes.

Such vinylidene compounds may be polymerized alone or in admixture with each other or with vinylidene compounds free from halogen. Among the halogen free materials which can be copolymerized with the halogen containing vinylidene compounds, e.g. vinyl chloride, are vinyl esters of carboxylic acids, e.g. vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate, esters of unsaturated acids, e.g., alkyl and alkenyl acrylates such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate and allyl acrylate as well as the corresponding methacrylates, e.g. methyl methacrylate and butyl methacrylate, vinyl aromatic compounds, e.g. styrene, p-ethyl sytrene, divinyl benzene, vinyl naphthalene, alpha-methyl styrene, p-methyl styrene, dienes such as butadiene and isoprene, unsaturated amides such as acrylamide, methacrylamide and acrylanilide and the esters of alpha, betaunsaturated carboxylic acids, e.g. The methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl, octyl, allyl, methallyl and phenyl esters of maleic, crotonic, itaconic and fumaric acids and the like. Specific examples of such esters are diethyl maleate, dibutyl fumarate.

The copolymers in which at least 50% of the copolymer is made from a halogen containing vinylidene compound such as vinyl chloride are frequently treated according to the invention.

The stabilizers of the present invention are also effective when intimately mixed with halogen containing resins in which part or all of the halogen is introduced into a preformed resin, e.g. chlorinated polyvinyl acetate, chlorinated polystyrene, chlorinated polyethylene, chlorinated polyvinyl chloride, chlorinated natural and synthetic rubbers and rubber hydrochloride.

Typical examples of copolymers include vinyl chloride vinyl acetate (95:5 weight ratio), vinyl chloride vinyl acetate (87:13 weight ratio), vinyl chloride-vinyl acetatemaleic anhydride (86:13:1 weight ratio), vinyl chloridevinylidene chloride (95:5 weight ratio), vinyl chloridediethyl fumarate (95 weight ratio), vinyl chloride-trichloroethylene (95:5 weight ratio).

The resin, e.g. polyvinyl chloride, can either be plasticized or unplasticized. As the plasticizer there can be employed conventional materials such as dioctyl phthalate, octyl decyl phthalate, tricresyl phosphate, 2-ethylhexyl diphenyl phosphate, dodecyl dicresyl phosphate, tributyl acetyl citrate, dioctyl sebacate, dibutyl sebacate, etc. The plasticizer is used in conventional amount, e.g. to 150 parts for each 100 parts of the vinyl chloride containing resin.

There can also be incorporated 0.1 to 10 parts per 100 parts of the halogen containing resin of a metal salt stabilizer. Thus, there can be used barium, strontium, calcium, cadmium, zinc, lead, tin, magnesium, cobalt, nickel, titanium and aluminum salts of phenols, aromatic carboxylic acids, fatty acids and epoxy fatty acids.

Examples of suitable salts include barium di(nonylphenolate), strontium di(nonylphenolate), strontium di- ,amylphenolate), barium di(octylphenolate), strontium di(octylphenolate), barium di(nonyl-o-cresolate), lead di- (octylphenolate), cadmium-Z-ethylhexoate, cadmium laurate, cadmium stearate, zinc capyrylate, cadmium caprate, barium stearate, barium Z-ethylhexoate, barium laurate, barium ricinoleate, lead stearate, aluminum stearate, magnesium stearate, calcium octoate, calcium stearate, cadmium naphthenate, cadmium benzoate, cadmium ptert, butylbenzoate, barium octyl salicylate, cadmium epoxy stearate, strontium epoxy stearate, cadmium salt of epoxidized acids of soybean oil, and lead epoxy s'tearate.

In plastisol formulations there is preferably also included from 0.1 to 10 parts per 100 parts of resin of an epoxy vegetable oil such as epoxidized soybean oil or epoxidized tall oil.

There can also be incorporated conventional phosphites in an amount of 0.1 to 10 parts per 1000 parts of polymer. Typical of such phosphites are triphenyl phosphite, tris decyl phosphite, decyl diphenyl phosphite, di(p-tbutylphenyl) phenyl phosphite, di-phenyl-o-cresyl phosphite, trioctyl phosphite, tricresyl phosphite, tri-benzyl phosphite, polymeric phosphites such as Weston 243-B (made in accordance with Pat. 3,341,629) and prepared from triphenyl phosphite and hydrogenated bisphenol and having a molecular weight of about 3000 and Weston 440 (a linear polymeric pentacrythritol hydrogenated bisphenol A phosphite made in accordance with Patent 3,053,878, distearyl pentaerythritol diphosphite, thiophos phites such as trilauryl tri-thiophosphite, trioleyltrithio'f phosphite and tristearyl trithiophosphite.

There can also be included thio compounds conventionally employed in monoolefin polymers formulations, e.g. in an amount of 0.01 to 10%, usually 0 .1 to 5% of the polymer. Thus, there can be used pentaerythritol tetra (mercaptoacetate), 1,1,1-trimethylolethane tri (mercaptoacetate), 1,l,1-trimethyl0lpropane tri (mercaptoacetate), dioleyl thiodipropionate, dilauryl thiodipropionate, other thio compounds include distearyl 3,3-thiodipropionate, dicyclohexyl 3,3 thiodipropionate, dicetyl-3,3'-thiodipropionate, dioctyl-3,3 thiodipropionate, dibenzyl 3,3- thiodipropionate, lauryl myristyl-3,3'-thiodipropionate, diphenyl 3,3 thiodipropionate, dip-methoXyphenyl-3,3'- thiodipropionate, didecyl-3,3'-thiodipropionate, dibenzyl- 3,3 thiodipropionate, diethyl 3,3-thiodipropionate, lauryl ester of 3- methyl-mercapto propionic acid, lauryl ester of 3-butyl-mercapto propionic acid, lauryl ester of 3-laurylmercapto propionic acid, phenyl ester of 3-octylmercapto propionic acid, lauryl ester of 3-phenylmercapto propionic acid, lauryl ester of S-benzyl-rnercapto propionic acid, lauryl ester of 3-(p-methoxy) phenylmercapto propionic acid, lauryl ester of 3-cyclohexylmercapto propionic acid, lauryl ester of 3-hydroxymethylmercaptopropionic acid, myristyl ester of 3-hydroxyethylmercapto propionic acid, octyl ester of 3-methoxymethylmercap'to propionic acid, dilauryl ester of 3-carboxylmethylmercapto propionic acid, dilauryl ester of 3-carboxypropylmercapto propionic acid, dilauryl-4,7-dithiasebacate, dilauryl-4,7,1 8,11 tetrathiotetradecandioate, dimyristyl-4,l1-dithiatetradecandioate, lauryl 3-benzothiazylmercaptopropionate. Preferably the esterifying alcohol is an alkanol having 10 to 18 carbon atoms. Other esters of beta thiocarboxylic acids set forth in Gribbins Patent 2,519,744 can also be used.

Likewise, there can be included 0.01-10%, usually 0.1- 5% in the monoolefin polymer formulations polyvalent metal salts. Examples of such salts are calcium stearate, calcium 2-ethylhexoate, calcium octate, calcium oleate, calcium ricinoleate, calcium myristate, calcium palmitate, calcium laurate, barium laurate, barium stearate, mag; nesium stearate, as well as zinc stearate, cadmium laurate, cadmium octoate, cadmium stearate and the other polyvalent metal salts of fatty acids'set forth previously.

There can also be added phenolic antioxidants in an amount of 0.01-10%, preferably (Ll-5%. Examples of such phenols include 2,6-di-t-butyl-p-cresol (Ionol), butylated hydroxyanisole, propyl gallate, 4,4 thiobis(6 tbutyl-m-cresol), 4,4-cyclohexylidene diphenol, 2,5 di-tamyl hydroquinone, 4,4-butylidene bis(fi-t-butyl-m-cresol), hydroquinone monobenzyl ether, 2,2'-methylenebis(4 methyl 6 t butylphcnol) (Catalin 14), 2,6- butyl 4 decycloxphenol, 2 t butyl 4 dodecycloxyphenol, 2 t butyl 4 dodecyloxyphenol, 2 t butyl- 4 octadecyloxyphenol, 4,4 methylene bis(2,6-di-tbutyl phenol), p aminophenol, N-lauryloxy-p-aminophenol, 4,4 thiobis(3 methyl 6 -.t butylphenol), bis! [0 (1,l,3,3 tetramethylbutyl)phenol] :sulfide, 4-acety1- beta-resorcylic acid, A stage p-t-butylphenolformaldehyde resin, crotonaldehyde condensate of 3-methyl-,6-t-butylphenol, 2,6-di-t-butyl p-cresol (Ionol), 2,2-methylenebis 4 ethyl 6 t butylphenol (AG-425), 4-dodecyloxy-2- '25 COMPOUND 37 Tetrakis(o-phenylene chlorophosphite) nickel 100 ml. of chlorobenzene, 44 grams (0.25 mol) of ophenylene chlorophosphite and 10.7 grams (0.062 mol) of Ni(CO) dissolved in 100 ml. of chlorobenzene were placed in a flask. The CO gas evolved was collected. 2600 ml. was evolved without heating, 1500 ml. was evolved by heating to 50 C. and .fiually 2700 ml. was evolved by heating for 15 minutes at 135 C. 6,800 ml. total CO was evolved (theory 6,600 ml.). The chlorobenzene was stripped from the reaction product to give Compound 37 as the residue. It was decolorized in conventional manner and had an M.P. of 160-l70 C.

COMPOUND 38 Tetrakis (cyclohexyl o-phenylene phosphite) nickel To 26.0 grams (0.109 mol) of o-phenylene cyclohexyl phosphite, there were added 100 ml. of chlorobenzene and 4.0 grams (0.023 mol) of Ni(CO) in 100 ml. of chlorobenzene. The CO evolved was collected in an amount of 2500 ml. (theory 2440 ml.). Heating was carried out to reflux at 135 C. for one-half hour. The mixture was cooled to room temperature and the chlorobenzene then removed by vacuum stripping. The product had an MP. of 128-130 C. and decomposed at 230 C., Ni 5.3% (theory 5.8%).

TABLE 1 Method Melting Compound of preppoint, Percent number aration Appearance 0. metal White solid 1 270 8.3 Ni Lightdyellow crystalline 2 200 8.2 Ni

so 1 Light yellow solid 137-140 11.5 Ni Off-white solid... 2 260 14.5 M Yellow solid 2 270 8.4 Fe d0 170-180 15.6 Mn

White 5011 255-260 7.4 Ni Green solid. 2 164 12.1 Ni White solid 151-157 5.8 Ni White crystalline solid. 110-116 5.8 Ni Pale tan glass 4.85 N1 White solid 105-110 9.8 Cu do 2 230-232 6.0 Ni

.do 120-125 9.7 Cu Yellow sohd- 112 12.2 Mu Amber liquid-.. 3 7 Ni Slight yellow soli 107 4.5 Ni White solid 2 245 27.6 W o 166-170 5.5 Ni o 215 5.2Ni

Yellow solid. 300 10.8 Ni Pale yellow 330 6.8 Ni White solid 275-277 6.3 Ni do 33 13.3 Ni do 33 8.2 Ni Oil-white solid 157-158 4.7 Ni Yellow solid. 2 260 19.2 W Colorless liquid 4.4 Ni White solid 162-175 6.1 Ni .do 158-162 5.7 Ni Ofi white solid 84-85 8.3 Ni Yellow glass 6.0 Ni

1 Some decomposed.

Decomposed.

In addition to their stabilizing properties, the compounds of the present invention also are good flame proofing agents due to their phosphorus content. Thus they can be used as flame proofing agents with the polymers and in the manner disclosed by Grayson Pat. 3,294,- 870, Dec. 27, 1966, col. 4, line 3 to col. 5, line 28.

While the compounds of the present invention are useful in the manner of conventional heat and light stabilizers, e.g. with vinyl chloride resins, they are primarily useful as ultraviolet light stabilizers, probably because they are triplet quenchers. They also are useful as dye assistant as they provide dyesites in the polymer formulations.

While the ultraviolet light stabilizers of the present invention are most useful as ultraviolet light stabilizers for polypropylene and propylene copolymers with other hydrocarbons, their utility is not limited thereto.

{The ultraviolet light stabilizers of the present invention are particularly effective with solid polyethylene, polypropylene, ethylene propylene copolymers (e.g. 50:50, 80:20 and :80), ethylene rnonoolefin copolymers wherein the monoolefin has 4-10 carbon atoms and is present in a minor amount, e.g. ethylene-butene-l copolymer (95:5) and ethylene decene 1 copolyrner (90:10). Furthermore, they can be used to stabilize natural rubber, styrene-butadiene rubber (SBR), e.g. (75% butadiene-% styrene), EPDM rubbers, ABS terpolymers (e.g. 20-30% acrylonitrile, 20-30% butadiene, 40-60% styrene), polyisoprene, polybutadiene, styrene-acrylonitrile copolymers butyl rubber, polyacrylonitrile and acrylonitrile copolymers (e.g. acrylonitrilevinyl chloride 85: 15), polystyrene, impact modified polystyrene, butadiene-acrylonitrile (e.g. 60:40); polymerized acrylates and methacrylate, e.g. polymethyl acrylate polymethyl methacrylates and polybutyl acrylate, polyacetals, e.g. polyoxymethylene polymers (e.g. Delrin and Celcon), polycarbonates (e.g. bisphenol A-carbonate polymer), polysulfones, polyphenyleneoxides, phenoxy resins, epoxy resins, A-epichlorhydrin, nylon, cellulose acetate, cellulose acetate-propionate cellulose acetate-butyrate, cellulose nitrate, ethyl cellulose, linear polyesters, e.g. polyethylene terephthalate (Dacron, Mylar), unsaturated polyesters, e.g. vinyl compounds modified alkyds such as ethylene glycol phthalate-maleate modified with styrene or diallyl phthalate, oil modified alkyd resins, e.g. soybean oil-glyceryl phthalate resin, chlorosulfonated polyethylene, polyurethanes (e.g. toluene diisocyanate reaction products with polypropylene glycol molecular weight 2025 or with glycerine-ethylene oxide adduct having a hydroxyl number of 56).

As the EPDM rubber there can be employed many of the commercially available EPDM rubbers. The EPDM rubber normally contains to 70 molar percent (preferably 5-0 to 60 molar percent) of ethylene, 65 to 20 molar percent (preferably to molar percent propylene) and 1 to 15 molar percent (preferably 3 to 5 molar percent) of the nonconjugated polyolefin. Usually the polyolefin is not over 10 molar percent. The ethylene and propylene can each be 5 to 9'5 molar percent of the composition.

As used in the present specification and claims, the term nonconjugated polyolefin includes aliphatic nonconjugated polyene hydrocarbons and cycloaliphatic nonconjugated polyene hydrocarbons, e.g. endocyclic dienes. Specific examples of suitable nonconjugated polyolefins include pentadiene-1,4; hexadiene-1,4; dicyclopentadiene, methyl cyclopentadiene dimer, cyclododecatriene, cyclooctadiene- 1,5 5 -methylene-2-norbornene.

Specific examples of suitable terpolymers are the Royalenes which contain 55 mole percent ethylene, 40 to 42 mole percent propylene and 3 to 5 mole percent dicyclopentadiene; Enjay terpolymers, e.g., ERP-404 of Enjay and Enjay 3509 which contains about 55 mole percent ethylene, 41 mole percent propylene and 4 mole percent 5-methylene-2-norbornene; Nordel, a terpolymer of 55 mole percent ethylene, 40 mole percent propylene and 5 mole percent hexadiene-1,4. Another suitable terpolymer is the one containing mole percent ethylene, 47 mole percent propylene and 3 mole percent 1,5-cyclooctadiene (Dutrel).

Examples of EPDM rubbers are given in US. Pats. 2,933,480; 3,000,866; 3,063,973; 3,093,620; 3,093,621, and 3,136,379, in British Pat. 880,904 and in Belgian Pat. 623,698.

The ultraviolet light stabilizer compositions of the present invention are also useful with other solid polymers. Thus they can be used with resins made from vinylidene compounds such as vinyl chloride, vinylidene chloride,

29 hydroxy-benzophenone, 3 hydroxy 4 (phenylcarbonyl) phenyl palmitate, n-dodecyl ester of 3-hydroxy-4- (phenylcarbonyl) phenoxyacetic acid, and t-butylphenol.

The use of epoxy compounds in an amount of 0.015% in the monoolefin and other polymer compositions is also valuable. Examples of such epoxy compounds include epoxidized soya bean oil, epoxidized lard oil, epoxidized olive oil, epoxidized linseed oil, epoxidized castor oil, epoxidized peanut oil, epoxidized corn oil, epoxidized tung oil, epoxidized cottonseed oil, epichlorhydrinbisphenol A resins (epichlorohydrindiphenylolpropane resins), phenoxy-propylene oxide, butoxypropylene oxide, epoxidized neopentylene oleate, glycidyl epoxystearate, epoxidized alpha-olefins, epoxidized glycidyl soyate dicyclopentadiene dioxide, epoxidized butyl tallate, styrene oxide, dipentene dioxide, glycidol, vinyl cyclohexene dioxide, glycidyl ether of resorcinol, glycidol ether of 1,5-dihydroxynaphthalene, epoxidized linseed oil fatty acids, allyl glycidyl ether, butyl glycidyl ether, cyclohexane oxide, 4- (2,3-epoxypropoxy) acetophenone, mesityl oxide epoxide, 2-ethyl-3-propyl glycidamide, glycidyl ethers of glycerine, pentaerythritol and sorbitol, and 3,4-epoxycyclohexane- 1,1-dimethanol bis-9,10-epoxystearate.

The novel ultraviolet light stabilizers of the present invention are generally used in an amount of 0.005 to (or even parts) per 100 parts of polymer to be stabilized. Preferably, they are employed in an amount of 0.1 to 5 parts per 100 parts of polymer.

Frequently it is desirable to incorporate conventional ultraviolet light absorbers, e.g. in an amount of 0.005 to 10 parts, preferably 0.1 to 5 parts, per 100" parts of polymer. In many cases, synergistic etfects have been noted.

Examples of such ultraviolet light absorbers include benzophenones such as 2-hydroxy-4-methoxybenzophenone, 2,4-dihydroxy-benzophenone, 2,2'-dihydroxy-4-methoxy-benzophenone, 2,2'-dihydroxy-4-n-octoxy-benzophenone, Z-hydroxy-4-n-octoxybenzophenone (Cyasorb 531), 2-hydroxy-4-butoxybenzophenone, 4'-chloro-2-hydroxy-4-octoxybenzophenone, 5-chlor-Z-hydroxy-benzophenone, 2,4-dibenzoyl resorcinol, 4-dodecyloxy-2-hydroxybenzophenone, 2,2'-dihydroxy, 4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, sodium 2,2-dihydroxy-4,4' dimethoxy-S-sulfonobenzophenone, 2,2-dihydroxy-4-butoxybenzophenone, 2,2'Fdihydroxy-4-dodecoxybenzophenone, 2-hydroxy-4roctadecoxy-benzophenone, 2,2'-dihydroxy-4,4-ethoxybenzophenone, 2,2'-dihydroxy-4-heptadecoxybenzophenone, 2-hydr0xy-4-n-heptadecoxybenzophenone, 2-hydroxy-4-methoxy-2-carboxybenzophenone, 2-hydroxy-4-(2*hydroxy-3-methylacryloxy)propoxybenzophenone, 2-hydroxy-4-methoxy-4-methylbenzophenone,

salicylates such as phenyl salicylate, 4-t-butylphenyl salicylate, 4-octyl-phenyl salicylate, bisphenol A disalicylate, carboxyphenyl salicylate, strontium salicylate, methyl salicylate, dodecyl salicylate, resorcylates such as resorcinol monobenzoate, benzylidene malonates such as diethyl' p-methoxybenzylidene malonate, dimethyl-p-methoxy'benzylidene malonate, diethyl p-hydroxybenzylidene malonate, benzotriazoles such as 2-hydroxy-phenylbenzotriazole and alkyl substituted derivatives thereof, 2(2'- hydroxy 5 methyl phenyl) benzotriazole (Tinuvin P), 2,- cyanostilbyl 4 naphthotriazole, 2(-2-hydroxy-5- ethyl phenyl) b'en'zotriazol e, 2(-2-hydroxy-5-octyl phenyl) benzotriazole, Tinuvin 328 (a substituted benzotriazole), 2(2" hydroxy"-"3",5" di t butylphenyl) triazole (Tinuvin 327), 2(2' hydroxy 3' di t butyl 5'- methylphenyl) benzotriazole (Tinuvin 326), 2-(2'-hydroxy 4' methoxyphenyl) benzotriazole, 2-(2'-hydroxy- 3',5-di-t-amylphenyl) benzotriazole, 2-(2-hydroxy-3',5'- di-t-butylphenyl)-5-chlorobenzotriazole, substituted acrylonitriles of the formula where R and R are alkyl or aryl and R is an electronegative substituent such as ethyl 2-cyano-3,3'-diphenyl acrylate, 2 ethylhexyl 2 cyano 3,3 diphenyl acrylate, alpha phenylbenzylidene malononitrile, diphenylbenzylidene-malononitrile, conventional metal (particularly nickel) organic complexes such as Ferro AM 101 (nickel complex of the formula) t-azfiu t-CsHn Cyasorb UV 1084 (nickel complex of the formula) C HgNHz also called 2,2'-thiobis-(4-t-octylphenolate) n-butylamine nickel, nickel bis(octylphenyl sulfide).

There can also be used triazines such as those having at least one o-hydroxyphenyl substituent such as 2,4,6- tris (2 hydroxy 4 octyloxy phenyl) s triazine, 2 (2 hydroxy 4 octyloxyphenyl) 4,6 dixylyl striazine, benzothiazoles such as 2-anilinobenzo thiazole, 2 (N methylanilino) benzothiazole, 2 (4 methoxyanilino) benzothiazole, 2 (2 methoxylphenylimino) 3 ethyl benzothiazoline, 2 phenylimino 3 ethylbenzothiazoline and 2 (beta naphthylimino) benzothiazoline, arylaminoethylenes such as N-methyl p-me' thoxyanilinomethylenemalonitriles, diphenylaminomethylenemalononitrile, N methyl p methoxyanilinomethylmalononitrile, guanidines such as 1,2 dibenzoyl 3- arylguanidines, e.g. 1,2 dibenzoyl 3 (p methoxyphenyl) guanidine; 1,2-dibenzoyl 3 (p chlorophenyl) guanidine, 1,2 di(p methoxybenzoyl) 3 (p methoxyphenyl) guanidine.

There can be used any of the ultraviolet light absorbers disclosed in Di Giamino Pat. 3,496,134 issued Feb. 17, 1970, or any of the patents referred to therein on col. 3, lines 40 to col. 4, line 33. The entire disclosure of Di Giamino and of all the patents cited therein, namely, 2,777,838; 2,682,559; 2,693,492; 2,861,053; 2,919,259; 2,976,259; 3,006,959; 3,098,842; 3,004,896; 3,018,269; 3,271,339; 3,146,217; 3,118,887; 3,293,247; 3,293,249; 3,244,668; 3,079,336; 3,074,971 3,085,097; 3,111,417; 3,149,146; 3,215,724 and 3,278,448 is hereby incorporated by reference.

The formulations in Table 2 below all contained parts of solid polypropylene, 0.3 part of distearyl thiodipropinnate, 0.1 part of Irganox 1010 (pentaerythritol tetrakis[3( 3,5 di-t-butyl-4-hydroxyphenyl)]) propionate and the indicated amounts of the other indicated materials. The formulations were all made up as 50 films and used as test strips in Atlas Weather-O-meter. The abbreviation pph. indicates parts per hundred of polymer. Control A had 0.25 pph. of 2-hyldroxy-4-octoxybenzophenone and Control B had no other additive.

TABLE 2 2-hydloxy- 4-octoxy- Metal benzo Color Hours complex phenono to (p.p.h.) (p.p.h.) Initial Final failure t 01 0.25 Colorless Colorless 200 ..(i do Compound number:

Light yellow Light yellow Coloirless Colorless.

Light green In place of the compounds of the present invention used in Table 2, there can be employed in the same formulation in place thereof and in the same amount, any of the other metal-trivalent phosphorus complexes disclosed as useful in the present invention. Likewise, in place of polypropylene in Table 2 with the ultraviolet light stabilizers of the present invention, there can be employed any of the other polymers set forth supra.

Additional illustrative formulations include the following:

FORMULATION 1 FORMULATION 5 In any of the formulations set forth above, the polypropylene or polyvinyl chloride can be replaced by one of the other polymers set forth supra, e.g. cellulose acetate, natural rubber, SBR rubber, EPDM ru-bber, butadiene-acrylonitrile rubber, ABS terpolymer, polyethylene terephthalate, styrene modified ethylene glycol maleate-phthalate polymer, etc. I

The term alkyl is intended to cover alkyl groups in general, eg of 1 to 18 or even 20 carbon atoms. Even higher alkyl groups, e.g. of 30 carbon atoms are included since they are operative, if available. The only disadvantage of having extremely high alkyl groups is that they reduce the percentage of phosphorous and metal, e.g. nickel in the compound and hence on a weight basis more stabilizer compound may be needed to have the same stabilizing effect. The term lower alkyl is intended to cover alkyl of 1 to 6 carbon atoms. The terms cycloalkyl is intended to cover all available cycloalkyl groups.'While cyclohexyl is generally preferred because compounds containing this group are readily available, the terms-is also inclusive of cyclopropyl, cyclobutyl, cyclopentyl, cycloheptyl, cyclooctyl or the like. i

What is claimed is:

1. Organic solid polymer material normally susceptible to deterioration due to the effects of ultraviolet light containing a stabilizingly effective quantity of (A), a stabilizer, wherein (A) has the formula where R is alkyl of 1 to 17 carbon atoms or hydroxy methyl.

2. An organic material according to claim 1 wherein there is also included (B) another ultraviolet light stabilizer selected from the group consisting of hydroxybenzophenones, salicylates, resorcylates, benzylidene malonates, benzotriazoles, substituted acrylonitriles and metal organo complexes other than (A).

3. An organic material according to claim 2 wherein (B) is a hydroxybenzophenone.

4. An organic material according to claim 1 wherein R is alkyl of 1 to 2 carbon atoms.

5. An organic material according to claim 1 wherein R is hydroxymethyl.

6. An organic material according to claim 1 wherein the polymer is a propylene polymer.

7. An organic material according to claim 1 where (A) is used in an amount of 0.25 part per 100 parts of polymer, there is also employed 0.25 part of 2-hydroXy-4-octoxy- References Cited UNITED STATES PATENTS 3,395,112 7/1968 Kauder 260-4575 3,194,848 7/1965 Feldman et a1 260439 3,346,608 10/1967 Kutepow et a1 260439 3,328,443 6/1967 Clark et a1. 260-439 OTHER REFERENCES Gmelins Handbuck Der Anorganischen Chemie, 8th

edition, System No. 57(c), pp. 32 and 33. Pub. 1968.

DONALD E. CZAJA, Primary Examiner V. P. HOKE, Assistant Examiner U.S. Cl. X.R.

l06-15 PP, 176, 177; 2528.1; 260--45.75 R, 45.75 C, 270 R, 439 R, 814 

